第一章javascript简介
1.在地址栏输入javascript语句
Javascript:Document.write("显示文字")
2.将javascript嵌入 HTML文档
< script language =javascript >
document.bgColor="blue"
</ script >
第二章 使用变量和数组
1.声明变量
< script language =javascripe >
Var answer1,answer2,answer3,answer4;
answer1=9;
answer2=2.5
answer3="Milkey May"
answer4=true
</ script >
2.使用整数
< script language =javascript >
var decimalNum,hexadecimalNum,octalNum
decimalNum=24
hexadecimalNum=0x24
octalNum=024
document.write("显示十进制数:"+ decimalNum+"<br>")
document.write("显示十六进制数:"+ hexadecimalNum +"<br>")
document.write("显示八进制数:"+ octalNum +"<br>")
</ script >
3.使用浮点数
< script language =javascript >
var num1,num2,num3,num4
num1=1234567890000.0
num2=5.14e23
num3=0.0000123456
num4=6.0254e3-4
document.write("浮点数1:"+num1+"<br>")
document.write("浮点数2:"+num2+"<br>")
document.write("浮点数3:"+num3+"<br>")
document.write("浮点数4:"+num4+"<br>")
</ script >
4.使用布尔值
< script language =javascript >
var answer1,answer2
answer1=true
answer2=false
document.write("显示布尔1:"+answer1+"<br>")
document.write("显示布尔2:"+answer2+"<br>")
</ script >
5.使用字符串
< script language =javascript >
var str1,str2
str1="fdsgdg dsfdsf china"
str2="武汉市广播电视大学"
document.write("显示字符串1:"+str1+"<br>")
document.write("显示字符串2:"+str2+"<br>")
</ script >
6.确定变量类型
< script >
var answer1,answer2,answer3,answer4
answer1=9
answer2=2.5
answer3="milky may"
answer4=true
document.write("变量1的类型是:"+typeof answer1 +"<br>")
document.write("变量2的类型是:"+typeof answer2 +"<br>")
document.write("变量3的类型是:"+typeof answer3 +"<br>")
document.write("变量4的类型是:"+typeof answer4 +"<br>")
</ script >
7.将字符串转换成数字
< script >
var str1="31 days in january"
var int1=parseInt(str1)
document.write("str1的数据类型是 :"+typeof str1+"<br>")
document.write("int1的数据类型是 :"+typeof int1+"<br>")
</ script >
8.将数字转换成字符串
< script >
var int1=256
var str1=""+int1
document.write("str1的数据类型是 :"+typeof str1+"<br>")
document.write("int1的数据类型是 :"+typeof int1+"<br>")
</ script >
9.声明数组
< script >
array=new Array(5)
array[0]=1
array[1]=3
array[2]=5
array[3]=7
array[4]=11
document.write("数组是:"+array[0]+" "+array[1]+" "+array[2]+" "+array[3]+" "+array[4])
</ script >
10.确定数组元素的个数
< script >
array=new Array(5)
array[0]=1
array[1]=3
array[2]=5
array[3]=7
array[4]=11
document.write("数组是:"+array[0]+" "+array[1]+" "+array[2]+" "+array[3]+" "+array[4]+"<br>")
document.write("数组的元素个数是"+array.length)
</ script >
11.将数组转换为字符串
< script >
array=new Array()
array[0]="dark"
array[1]="apple"
array[2]="nebula"
array[3]="water"
str1=array.join()
str2=array.join(" ")
document.write(str1+"<br>")
document.write(str2)
</ script >
12.对数组排序
< script >
array=new Array()
array[0]="dark"
array[1]="apple"
array[2]="nebula"
array[3]="water"
str1=array.sort()
document.write(str1+"<br>")
</ script >
第三章 创建表达式
1.使用算术运算符
< script >
var1=12
var2=10
varadd=var1+var2
varsub=var1-var2
varmult=var1*var2
vardiv=var1/var2
varmod=var1%var2
document.write("数据1是:"+var1+"<br>")
document.write("数据2是:"+var2+"<br>")
document.write("数据相加是:"+varadd+"<br>")
document.write("数据相减是:"+varsub+"<br>")
document.write("数据相乘是:"+varmult+"<br>")
document.write("数据相除是:"+vardiv+"<br>")
document.write("数据相除取余数是:"+varmod+"<br>")
</ script >
2.递增变量和递减变量
< script >
days=1
document.write("输出变量"+days+"<br>")
days++
document.write("递增后变量变为:"+days)
</ script >
3.创建比较表达式
< script >
daysofmonth=28
if(daysofmonth==28)
month="february"
document.write("days of month:"+daysofmonth+"<br>")
document.write("month:"+month)
</ script >
4.创建逻辑表达式
< script >
dayofmonth=28
if(dayofmonth==28 || dayofmonth==29)
month="february"
document.write("days of month:"+dayofmonth+"<br>")
document.write("month:"+month)
</ script >
5.使用条件运算符
< script language ="javascript" >
stomach="hungry";
time="5:00";
(stomach=="hungry"&&time=="5:00") ? eat = "dinner":eat="a snack";
document.write("输出结果"+eat);
</ script >
6.识别数字
< script >
var1=24;
(isNaN(var1))?document.write("变量var1"+var1+"不是数字"):Document.write("变量var1"+var1+"是数字")
</ script >
第四章 控制程序流程
1.使用IF –Else语句
< script >
month="december"
date=25
if(month=="december" && date==25)
document.write("今天是圣诞节,商店关门")
else
document.write("欢迎,您来商店购物")
</ script >
2.使用for 循环
< script >
for (count=1;count<=10;count++)
document.write("输出第"+count+"句"+"<br>")
</ script >
3.使用while循环
< script >
count=1
while(count<=15){
document.write("输出第"+count+"句" +"<br>")
count++}
</ script >
4.中断循环
< script >
count=1
while(count<=15){
count++
if(count==8)
break;
document.write("输出第"+count+"句"+"<br>")}
</ script >
5.继续循环
< script >
count=1
while(count<=15){
count++
if(count==8)
continue;
document.write("输出第"+count+"句"+"<br>")}
</ script >
6.使用javascript定时器
< script >
function rabbit()
{document.write("输出语句")
}
</ script >
< body onload =window.setTimeout(rabbit(),5000) >
7.设置定期间隔
< script >
window.setInterval("document.form1.text2.value=document.form1.text1.value",3000)
</ script >
< form name =form1 >
< input type =text name =text1 >< br >
< input type =text name =text2 >< br >
</ form >
8.清除超时和间隔
< script >
stop=window.setInterval("document.form1.text2.value=document.form1.text1.value",300)
</ script >
< form name =form1 >
< input type =text name =text1 >< br >
< input type =text name =text2 >< br >
< input type =button name =button1 value =" 清除超时和间隔" onclick =clearInterval(stop) >
</ form >
第五章 使用函数
1.声明函数
< script >
function quote()
{ document.write("输出语句")
}
</ script >
2.调用函数
< script >
function quote()
{ document.write("输出语句")
}
quote()
</ script >
3.了解全局变量和局部变量
任何不用 var关键字声明的变量都是全局变量,任何在函数外声明的变量都是全局变量
4.将参数传送给函数
< script >
function f(item)
{document.write("输出参数"+item+"<br>")
}
f("fgdfgd")
f("参数二")
</ script >
5.从函数返回值
< script >
function average(var1,var2,var3)
{ave=(var1+var2+var3)/3;
document.write("输出结果");
return ave;
}
document.write(average(34,56,78))
</ script >
6.通过HTML链接调用函数
< script >
function quote(){
document.write(" 输出字符串")
}
</ script >
< a href =javascript:quote() > 通过HTML链接调用函数 </ a >
< a href =javascript:Document.write("输出字符") > 通过HTML链接调用函数,直接写javascript语句 </ a >
第六章 处理事件
1.检查鼠标单击
< form name =form1 >
< input type =button name =button1 value =hello onclick =document.form1.button1.value='there' >
</ form >
2.检测双击
< form name =form1 >
< input type =button name =button1 value =hello onclick =document.form1.button1.value='你单击了按钮' ondblclick =document.form1.button1.value='你双击了该按钮' >
</ form >
3.创建悬停按钮
< img src =go.gif onmouseover =document.images[0].src='go2.gif' onmouseout = document.images[0].src='go.gif' >
4.检测按键
< form name =form1 >
< input type =text name =text1 value =hello onkeypress ="if(window.event.keyCode=='100') document.form1.text1.value='你按了d键'" >
</ form >
5.设置焦点
< form name =form1 >
< input type =text name =text1 value =hello
onfous =document.form1.text1.value='该文本框获得焦点'
onblur =document.form1.text1.value='该文本框失去焦点' >
</ form >
6.检测下拉菜单选择
< form name =form1 >
< select name =select1 size =4
onChange =document.form1.text1.value=document.form1.select1.value >
< option value ="北京" > 北京 </ option >
< option value ="上海" > 上海 </ option >
< option value ="武汉" > 武汉 </ option >
< option value ="天津" > 天津 </ option >
< option value ="大连" > 大连 </ option >
</ select >
< input tppe =text name =text1 value =hello >
</ form >
7.创建网页加载和卸载信息
< body onload =document.form1.text1.value='页面加载完毕' onunload =alert('再见,欢迎再来') >
< form name =form1 >
< input type =text name =text1 value ="页面正在加载 ……" >
</ form >
第七章 使用对象
1.理解对象\属性和方法
< body bgcolor ="green" >
< script >
document.write("页面背景颜色是:"+document.bgColor)
document.write("页面前景颜色是:"+document.fgColor)
</ script >
2.使用网页元素对象
< script >
</ script >
< form name =form1 >
< textarea name =ta1 > dfgfdgfdhfdhdfdfgdf </ textarea >
< input type =button value ="选择文本" onclick =document.form1.ta1.select() >
< input type =button value ="显示文本" onclick =document.write(document.form1.ta1.value) >
</ form >
3.使用子对象
< form name =form1 >
< input type =text name =text1 value =hello >
</ form >
< script >
document.form1.text1.value="gdfgfd"
</ script >
< form name =form1 >
< input type =radio name =radio1 > 男
< input type =radio name =radio2 > 女
</ script >
< script >
document.form1.radio1.checked=true
</ script >
4.使用预定义对象
< script >
str1="dgdfgdfgdfhf固定法固定法功夫攻打法"
document.write(str1+"<br>")
str2=str1.substr(5)
document.write(str2+"<br>")
document.write("输出圆的面积:"+Math.PI*Math.pow(5.0,2))
</ script >
5.创建新对象
< script >
today=new Date()
document.write("今天是"+(today.getMonth()+1)+"月"+today.getDate()+"日"+"<br>")
document.write("现在是:"+today.toLocaleString())
</ script >
6.引用当前对象
< form name =form1 >
< input type =text name =text1 value ="dgdgdfgfd" onclick =this.select() >
</ script >
7.查看对象属性
< script >
for(prop in window)
{document.write("window."+prop+"="+window[prop]+"<br>");}
for(prop2 in location)
{document.write("location."+prop2+"="+location[prop]+"<br>");}
</ script >
8.使用Array对象
< script >
array=new Array(10)
array[0]="bark"
array[1]="apple"
array[2]="nebula"
array[3]="cookie"
array[4]="technology"
document.write("数组元素个数是"+array.Length+"<br>")
document.write("用 join将数组合并"+array.join(" ")+"<br>")
document.write(" 数组排序"+array.sort())
</ script >
9.使用 image 对象
< img src =**.gif alt ="图片提示…." border =10 >
< script >
document.write("图片提示是:"+document.images[0].alt+"<br>")
document.write("图片边框大小是:"+document.images[0].broder)
</ script >
10.预加载图像
< script >
freddy=new Image()
freddy.src=freddy.gif
</ script >
< body onload =document.images[0].src=freddy.src >
, < img src ="blank.gif" >
</ body >
11.改变图像
< img src =freddy.gif >< br >
< form name =form1 >
< input type =button name =button1 value ="改变图像" onclickd =document.images[0].src=dudjp.gif >
</ form >
12.使用link和anchor对象
< a name =anchor1 > 锚点1 < br >
< a href =http://www.microsoft.com > Microsoft </ a >< br >
< a href =http://www.sohu.com > sohu </ a >< br >
< a href =http://www.sina.com.cn > sina </ a >< br >
< script >
document.write("本页面共有"+document.links.length+"链接"+"<br>")
document.write("本页面共有"+document.anchors.length+"锚点"+"<br>")
document.write("第一个链接协议是"+document.links[0].protocol+"<br>")
document.write("第一个链接路径是"+document.links[0].pathnamel+"<br>")
document.write("第一个链接href是"+document.links[0].hrefl+"<br>")
</ script >
13.改变链接
< a href =http://www.microsoft.com > link </ a >
< form name =form1 >
< input type =button name =button1 value ="改变链接" onclick =document.links[0].href='http://www.sohu.com' >
</ form >
14.使用history对象
< form name =form1 >
< input type =button name =button1 value ="向后返回2页" onclick =window.history.go(-2) >
</ form >
第八章 使用窗口
1.在浏览器的状态栏上显示文本
< body onload =window.status="欢迎光临我的站点" >
< a href =http://www.sohu.com > sohu </ a >
</ body >
2.改变背景色
< script >
document.bgColor="orange"
</ script >
3.列举背景颜色
< body bgColor =green >
< script >
document.write("当前背景色是:"+document.bgColor)
</ script >
</ body >
4.改变文本和链接颜色
< script >
document.bgColor="orange"
document.fgColor="blue"
document.linkColor="red"
</ script >
< h2 > 看看这段文本颜色 </ h2 >
< a href =http://www.sohu.com > sohu </ a >
</ body >
5.改变文档标题
< script >
name="Mouse"
document.title="welcome to "+name+"'s House"
document.write(document.title)
</ script >
6.显示修改日期
< script >
document.write("本页面最后修改时间是"+document.lastModified)
</ script >
7.查看当前文档的URL
< script >
document.write("本页面的URL:"+document.URL)
</ script >
8.查看引用页
< script >
document.write("本页面的引用页是"+document.referrer)
</ script >
9.打开新的浏览器窗口
< script >
window.open("*.htm","title","width=200,height=400,resizable=yes")
</ script >
10.关闭远程窗口
close.html:
< script >
document.write("正文")
</ script >
< form name =form1 >
< input type =button name =button1value="关闭" onclick =window.close() >
</ form >
open.html
< script >
window.open("close.html","romote","width=200,height=400,resizable=yes")
</ script >
11.打印窗口
< script >
document.write("正文")
</ script >
< form name =form1 >
< input type =button value =打印 onclick =window.print() >
</ form >
12.移动窗口
< form name =form1 >
水平方向 < input type =text name =x value =20 >
垂直方向 < input type =text name =y value =50 >
< input type =button value ="移动窗口到…" onclick =window.moveTo(document.form1.x.value,document.form1.y.value) >
</ form >
< form name =form1 >
水平方向 < input type =text name =x value =20 >
垂直方向 < input type =text name =y value =50 >
< input type =button value ="移动窗口" onclick =window.moveBy(document.form1.x.value,document.form1.y.value) >
</ form >
13.改变窗口大小
< form name =form1 >
水平方向 < input type =text name =x value =200 >
垂直方向 < input type =text name =y value =500 >
< input type =button value ="改变窗口大小到….." onclick =window.resizeTo(document.form1.x.value,document.form1.y.value) >
</ form >
< form name =form1 >
水平方向 < input type =text name =x value =200 >
垂直方向 < input type =text name =y value =500 >
< input type =button value ="改变窗口大小" onclick =window.resizeBy(document.form1.x.value,document.form1.y.value) >
</ form >
14.用警告对话框通知用户
< script >
window.alert("welcome")
</ script >
15.用提示对话框接受输入
< script >
name=window.prompt("输入姓名","姓名")
document.write(" 欢迎您:"+name+"来到这里")
</ script >
16.用确认对话框使用户做出决定
< script >
like=window.confirm("你觉得好吗?")
if(like==true)
document.write("谢谢你的夸奖")
else
document.write("希望得到你的夸奖")
</ script >
第九章 使用字符串
1.使用字符串对象
< script >
mystring="gdgdfgfddddaaaaaaaaaaaabbbbbbbbbbbbbbbbbvbhg.<br>"
document.write(mystring)
document.write(mystring.bold())
document.write(mystring.toUpperCase())
</ script >
2.使用子字符串
< script >
str1="fdsf 1111 gfdgfd dfdsf cccc dddd.<br>"
document.write(str1)
document.write(str1.substring(0,13)+"<br>")
document.write(str1.substr (20,11)+"<br>")
</ script >
3.连接字符串
< script >
str1="may you find"
str2="peace,happiness and prosperity.<br>"
document.write(str1+"<br>")
document.write(str2)
document.write(str1.concat(str2))
document.write(str1+=str2)
</ script >
4.格式化字符串变量
< script >
str1="peace,happiness and prosperity.<br>"
document.write(str1)
document.write(str1.big())
document.write(str1.small())
document.write(str1.bold())
document.write(str1.italics())
document.write(str1.strike())
document.write(str1.fontsize(6))
document.write(str1.fontcolor(green))
</ script >
5.创建锚和链接
< script >
str1="this is the bigginning of the page.<br>"
str2="….<br>"
str3="this is the end of the page .<br>"
str4="link to the start<br>"
str5="link to the end<br>"
document.write(str1.anchor("start"))
for(i=0;i<10;i++)
document.write(str2);
document.write(str3.anchor("end"))
document.write(str4.link("#start"))
document.write(str5.link("#end"))
</ script >
6.确定字符串长度
< script >
str1="this is the bigginning of the page."
document.write(str1+"<br>")
document.write( "字符串的长度是:"+str1.length)
document.write("字符串全部大写是;"+str1.toUpperCase())
document.write("字符串全部小写是;"+str1.toLowerCase())
</ script >
7.在字符串内搜索
< script >
str1="this is the end of the line.<br>"
document.write(str1)
document.write("字符end在字符串的位置是"+str1.search("end"))
document.write("字符dog在字符串的位置是"+str1.search("dog"))
</ script >
8.定位字符串中的字符
< script >
str1="spring is a time for flowers and trees and baby bunnles<br>"
document.write(str1)
document.write("the index for the second word ‘and' is"+str1.indexOf("and",30))
documednt.write("the last index of the word ‘and' is "+str1.lastIndexOf("and"))
</ script >
9.替换字符串中的文本
< script >
str1="spring is a time for flowers and trees and baby bunnles<br>"
document.write(str1)
document .write(str1.replace("and",","))
</ script >
10.字符串分离
< script >
str1="spring is a time for flowers and trees and baby bunnles<br>"
document.write(str1)
str1array=str1.split(" ")
document.write(str1array[0]+"<br>")
document.write(str1array[1]+"<br>")
document.write(str1array[2]+"<br>")
document.write(str1array[3]+"<br>")
</ script >
第十章 使用日期和时间
1.使用Date对象
< script >
cdate=new Date("august 2,1989 12:30:00")
document.write(cdate)
</ script >
2.显示当地时间和日期
< script >
cdate=new Date()
document.write("当前时间是:"+cdate.toGMTString()+"<br>")
document.write("日期和时间是:"+cdate.toLocaleString())
</ script >
3.获得时间和日期值
< script >
cdate=new Date()
document.write("显示当前的星期"+cdate.getDay()+"<br>")
document.write("显示当前的月份"+cdate.getMonth()+"<br>")
document.write("显示当前的日期"+cdate.getDay()+"<br>")
document.write("显示当前的年份"+cdate.getYear()+"<br>")
document.write("显示当前的小时"+cdate.getHours()+"<br>")
document.write("显示当前的分钟"+cdate.getMinutes()+"<br>")
document.write("显示当前的秒"+cdate.getSeconds()+"<br>")
</ script >
4.设置时间和日期值
< script language =javascript >
cdate=new Date("December 25,1984")
document.write("显示日期"+cdate+"<br>")
document.write("设置月份"+cdate.setMonth(10)+"<br>")
document.write("设置日期"+cdate.setDate(23)+"<br>")
document.write("设置年份"+cdate.setYear(2000)+"<br>")
document.write("设置小时"+cdate.setHours(13)+"<br>");
document.write("设置分钟"+cdate.setMinutes(47)+"<br>");
document.write("设置秒"+cdate.setSeconds(23)+"<br>");
document.write("显示设置后的日期和时间"+cdate);
</ script >
第十一章 使用Math对象
1. 使用Math对象
< script language =javascript >
</ script >
< form name =form1 >
圆的半径: < input type =text name =rad >< br >
圆的面积: < input type =text name =area >< br >
< input type =button name =button1 value =计算圆的面积 onclick =document.form1.area.value=document.form1.rad.value*document.
form1.rad.value*Math.PI >
</ form >
2.生成随机数
< script >
array1=new Array(
"这是第1句",
"这是第2句",
"这是第3句",
"这是第4句",
"这是第5句",
"这是第6句")
RandomNo=Math.floor(array1.length*Math.random())
document.write("随机输出某一句"+"<br>"+array1[RandomNo])
</ script >
3.使用平方根
< form name =form1 >
value: < input type =text name =va1 >< br >
平方根 < input type =text name =sqrt >< br >
< input type =button name =button1 value =计算平方根
onclick ="document.form1.sqrt.value=Math.sqrt(document.form1.va1.value)" >
</ form >
4.数字的舍入
< form name =form1 >
输入 < input type =text name =val >< br >
舍入的结果 < input type =text name =round >< br >
< input type =button name =button1 value =计算结果 onclick =document.form1.round.value=Math.round(document.form1.val.value) >
</ form >
5.乘方运算
< form name =form1 >
底数 < input type =text name =val >< br >
指数 < input type =text name =power >< br >
幂 < input type =text name =result >< br >
< input type =button name =button1 value =计算结果 onclick ="document.form1.result.value=Math.pow (document.form1.val.value,document.form1.power.value)" >
</ form >
6.发现最小值和最大值
< form name =form1 >
数字1 < input type =text name =val1 >< br >
数字2 < input type =text name =val2 >< br >
最小值 < input type =text name =min >< br >
最大值 < input type =text name =max >< br >
数字1 < input type =button value =计算 onclick ="document.form1.min.value=Math.min (document.form1.val1.value,document.form1.val2.value);document.form1.
max.value= Math.max(document.form1.val1.value,document.form1.val2.value)" >
</ form >
第十二章 使用表单
1.使用文本框
< form name =form1 >
< input type =text value ="information ,please" name =text1 >
</ form >
< script >
document.write("表单text1类型是: "+document.form1.text1.type+"<br>")
document.write("表单text1名称是: "+document.form1.text1.name+"<br>")
document.write("表单text1值是: "+document.form1.text1.value+"<br>")
document.write("表单text1大小是: "+document.form1.text1.size+"<br>")
</ script >
< form name =form1 >
< input type =text name =text1 value =click here
onfocus =document.form1.text1.select() >
</ form >
2.使用密码框
< form name =form1 >
< input type =password name =pw1 value =daylight >
</ form >
< script >
document.write("表单pw1的类型:"+document.form1.pw1.type+"<br>")
document.write("表单pw1的名称:"+document.form1.pw1.name+"<br>")
document.write("表单pw1的值:"+document.form1.pw1.value+"<br>")
document.write("表单pw1的大小:"+document.form1.pw1.size+"<br>")
</ script >
3.使用隐藏字段
< form name =form1 >
< input type =hidden name =hid1 value =piece of eight >
</ form >
< script >
document.write("表单hid1的类型:"+document.form1.hid1.type+"<br>")
document.write("表单hid1的名称:"+document.form1.hid1.name+"<br>")
document.write("表单hid1的值:"+document.form1.hid1.value+"<br>")
</ script >
4.使用文本区域框
< form name =form1 >
< textarea name =ta1 > how many grains of sand are there in the sahara desert? </ textarea >
</ form >
< script >
document.write("表单ta1的类型:"+document.form1.ta1.type+"<br>")
document.write("表单ta1的名称:"+document.form1.ta1.name+"<br>")
document.write("表单ta1的值:"+document.form1.ta1.value+"<br>")
document.write("表单ta1的横向宽度:"+document.form1.ta1.cols+"<br>")
document.write("表单ta1的纵向宽度:"+document.form1.rows.value+"<br>")
</ script >
6.使用重置按钮
< form name =form1 >
< input type =reset name =reset1 value ="rest form" >
</ form >
< script >
document.write("表单reset1的类型:"+document.form1.reset1.type+"<br>")
document.write("表单reset1的名称:"+document.form1.reset1.name+"<br>")
document.write("表单reset1的值:"+document.form1.reset1.value+"<br>")
</ script >
7.使用提交按钮
< form name =form1 >
< input type =submit name =submit1 value ="submit form" >
</ form >
< script >
document.write("表单submit1的类型:"+document.form1.submit1.type+"<br>")
document.write("表单submit1的名称:"+document.form1.submit1.name+"<br>")
document.write("表单submit1的值:"+document.form1.submit1.value+"<br>")
</ script >
8.使用复选按钮
< form name =form1 >
< input type =checkbox name =cb1 > computer savvy?
</ form >
< script >
document.write("表单cb1的类型:"+document.form1.cb1.type+"<br>")
document.write("表单cb1是否被选择?:"+document.form1.cb1.checked+"<br>")
document.write("表单cb1的名称:"+document.form1.cb1.name+"<br>")
</ script >
9.使用单选按钮
< form name =form1 >
< input type =radio name =radio1 > male
< input type =radio name =radio1 > female
</ form >
< script >
document.write("第一个按钮被选择"+document.form1.radio1[0].checked+"<br>")
document.write("第二个按钮被选择"+document.form1.radio1[1].checked+"<br>")
document.write("按钮的名称"+ document.form1.radio1[0].name+"<br>")
document.write("按钮的个数"+document.form1.radio1.length)
</ script >
10.使用选择列表
< form name =form1 >
< select name =select1 size =4 >
< option name =option1 value =lon > london,England </ option >
< option name =option2 value =dub > Dublin,Ireland </ option >
</ select >
</ form >
< script >
document.write("这个选择列表的名称"+document.form1.select1.name+"<br>")
document.write("这个选择列表的长度"+document.form1.select1.length+"<br>")
document.write("这个选择列表当前被选择的索引号"+document.form1.select1.selectedIndex+"<br>")
document.write("这个选择列表的尺寸"+document.form1.select1.size+"<br>")
</ script >
11.验证表单的有效性
< script >
function validate(){
if(document.form1.text1.value!='1'||'2'||'3'||'4'){
alert("请输入1~4的整数")
}
}
</ script >
< form name =form1 >
请输入1~4的整数:
< input type =text name =text1 size =4 onchange =validate() >
</ form >
12.控制表单焦点
< form name =form1 >
< input type =text name =text1 value =where is you focus? >< br >
< input type =text name =text2 value =is there? >< br >
< input type =text name =text3 value =or maybe here? >< br >
< input type =button name =button1 value ="text box #1" onclick =document.form1.text1.focus() >< br >
< input type =button name =button2 value ="text box #2" onclick =document.form1.text2.focus() >< br >
< input type =button name =button3 value ="text box #3" onclick =document.form1.text3.focus() >< br >
</ form >
第十三章 使用分栏
第十四章 使用navigator
1.使用navigator对象
< script >
document.write("navigator对象的属性"+"<br>")
document.write("appcodename:"+navigator.appCodeName+"<br>")
document.write("appname::"+navigator.appName+"<br>")
document.write("appversion:"+navigator.appVersion+"<br>")
document.write("platform:"+navigator.platform+"<br>")
document.write("userAgent:"+navigator.userAgent+"<br>")
</ script >
< script >
document.write("navigator对象的方法"+"<br>")
document.write("javaEnabled():"+navigator.javaEnabled())
</ script >
2.检查用户的浏览器
< script >
if(navigator.appName.indexOf("Microsoft")!=-1){
document.write("用户浏览器是微软的IE浏览器"+"<br>")}
else if(navigator.appName.indexOf("Netscape")!=-1){
document.write("用户浏览器是netscape的netscape浏览器"+"<br>")}
if(navigator.appVersion.indexOf("4.0")!=-1){
document.write("you are using a version 4.0compatible browser")
}
else{
document.write("this browser is not 4.0 compliant")}
</ script >
3.检测用户的操作系统
< script >
if (navigator.platform.indexOf("win32")!=-1){
document.write("you are using a computer running windows 95 or highter")}
else{
document.write("this computer is not running windows 95 or higher")}
</ script >
4.使用location对象
< script >
document.write("location对象的属性"+"<br>")
document.write("hash"+location.hash+"<br>")
document.write("hostname"+location.hostname+"<br>")
document.write("host"+location.host+"<br>")
document.write("href"+location.href+"<br>")
document.write("port"+location.port+"<br>")
document.write("search"+location.search+"<br>")
</ script >
重新加载网页
< form name =form1 >
< input type =button name =button1 value =重新加载本页 onclick =location.reload >
</ form >
5.使用cookie
< script >
finction makecookie(){
if(!document.cookie){
name=prompt("请输入你的姓名");
document.cookie="name="+name+";";}
}
</ script >
< body onload =makecookie() >
< script >
function makecookie(){
if(!document.cookie){
name=prompt("请输入你的姓名")
document.cookie="name="+name+";";
namestart=document.cookie.indexOf("=");
nameend=document.cookieindexOf(";");
document.writeln("your name is:"+document.cookie.substring(namestart+1,nameend)+",br>")
}
}
</ script >
1.在地址栏输入javascript语句
Javascript:Document.write("显示文字")
2.将javascript嵌入 HTML文档
< script language =javascript >
document.bgColor="blue"
</ script >
第二章 使用变量和数组
1.声明变量
< script language =javascripe >
Var answer1,answer2,answer3,answer4;
answer1=9;
answer2=2.5
answer3="Milkey May"
answer4=true
</ script >
2.使用整数
< script language =javascript >
var decimalNum,hexadecimalNum,octalNum
decimalNum=24
hexadecimalNum=0x24
octalNum=024
document.write("显示十进制数:"+ decimalNum+"<br>")
document.write("显示十六进制数:"+ hexadecimalNum +"<br>")
document.write("显示八进制数:"+ octalNum +"<br>")
</ script >
3.使用浮点数
< script language =javascript >
var num1,num2,num3,num4
num1=1234567890000.0
num2=5.14e23
num3=0.0000123456
num4=6.0254e3-4
document.write("浮点数1:"+num1+"<br>")
document.write("浮点数2:"+num2+"<br>")
document.write("浮点数3:"+num3+"<br>")
document.write("浮点数4:"+num4+"<br>")
</ script >
4.使用布尔值
< script language =javascript >
var answer1,answer2
answer1=true
answer2=false
document.write("显示布尔1:"+answer1+"<br>")
document.write("显示布尔2:"+answer2+"<br>")
</ script >
5.使用字符串
< script language =javascript >
var str1,str2
str1="fdsgdg dsfdsf china"
str2="武汉市广播电视大学"
document.write("显示字符串1:"+str1+"<br>")
document.write("显示字符串2:"+str2+"<br>")
</ script >
6.确定变量类型
< script >
var answer1,answer2,answer3,answer4
answer1=9
answer2=2.5
answer3="milky may"
answer4=true
document.write("变量1的类型是:"+typeof answer1 +"<br>")
document.write("变量2的类型是:"+typeof answer2 +"<br>")
document.write("变量3的类型是:"+typeof answer3 +"<br>")
document.write("变量4的类型是:"+typeof answer4 +"<br>")
</ script >
7.将字符串转换成数字
< script >
var str1="31 days in january"
var int1=parseInt(str1)
document.write("str1的数据类型是 :"+typeof str1+"<br>")
document.write("int1的数据类型是 :"+typeof int1+"<br>")
</ script >
8.将数字转换成字符串
< script >
var int1=256
var str1=""+int1
document.write("str1的数据类型是 :"+typeof str1+"<br>")
document.write("int1的数据类型是 :"+typeof int1+"<br>")
</ script >
9.声明数组
< script >
array=new Array(5)
array[0]=1
array[1]=3
array[2]=5
array[3]=7
array[4]=11
document.write("数组是:"+array[0]+" "+array[1]+" "+array[2]+" "+array[3]+" "+array[4])
</ script >
10.确定数组元素的个数
< script >
array=new Array(5)
array[0]=1
array[1]=3
array[2]=5
array[3]=7
array[4]=11
document.write("数组是:"+array[0]+" "+array[1]+" "+array[2]+" "+array[3]+" "+array[4]+"<br>")
document.write("数组的元素个数是"+array.length)
</ script >
11.将数组转换为字符串
< script >
array=new Array()
array[0]="dark"
array[1]="apple"
array[2]="nebula"
array[3]="water"
str1=array.join()
str2=array.join(" ")
document.write(str1+"<br>")
document.write(str2)
</ script >
12.对数组排序
< script >
array=new Array()
array[0]="dark"
array[1]="apple"
array[2]="nebula"
array[3]="water"
str1=array.sort()
document.write(str1+"<br>")
</ script >
第三章 创建表达式
1.使用算术运算符
< script >
var1=12
var2=10
varadd=var1+var2
varsub=var1-var2
varmult=var1*var2
vardiv=var1/var2
varmod=var1%var2
document.write("数据1是:"+var1+"<br>")
document.write("数据2是:"+var2+"<br>")
document.write("数据相加是:"+varadd+"<br>")
document.write("数据相减是:"+varsub+"<br>")
document.write("数据相乘是:"+varmult+"<br>")
document.write("数据相除是:"+vardiv+"<br>")
document.write("数据相除取余数是:"+varmod+"<br>")
</ script >
2.递增变量和递减变量
< script >
days=1
document.write("输出变量"+days+"<br>")
days++
document.write("递增后变量变为:"+days)
</ script >
3.创建比较表达式
< script >
daysofmonth=28
if(daysofmonth==28)
month="february"
document.write("days of month:"+daysofmonth+"<br>")
document.write("month:"+month)
</ script >
4.创建逻辑表达式
< script >
dayofmonth=28
if(dayofmonth==28 || dayofmonth==29)
month="february"
document.write("days of month:"+dayofmonth+"<br>")
document.write("month:"+month)
</ script >
5.使用条件运算符
< script language ="javascript" >
stomach="hungry";
time="5:00";
(stomach=="hungry"&&time=="5:00") ? eat = "dinner":eat="a snack";
document.write("输出结果"+eat);
</ script >
6.识别数字
< script >
var1=24;
(isNaN(var1))?document.write("变量var1"+var1+"不是数字"):Document.write("变量var1"+var1+"是数字")
</ script >
第四章 控制程序流程
1.使用IF –Else语句
< script >
month="december"
date=25
if(month=="december" && date==25)
document.write("今天是圣诞节,商店关门")
else
document.write("欢迎,您来商店购物")
</ script >
2.使用for 循环
< script >
for (count=1;count<=10;count++)
document.write("输出第"+count+"句"+"<br>")
</ script >
3.使用while循环
< script >
count=1
while(count<=15){
document.write("输出第"+count+"句" +"<br>")
count++}
</ script >
4.中断循环
< script >
count=1
while(count<=15){
count++
if(count==8)
break;
document.write("输出第"+count+"句"+"<br>")}
</ script >
5.继续循环
< script >
count=1
while(count<=15){
count++
if(count==8)
continue;
document.write("输出第"+count+"句"+"<br>")}
</ script >
6.使用javascript定时器
< script >
function rabbit()
{document.write("输出语句")
}
</ script >
< body onload =window.setTimeout(rabbit(),5000) >
7.设置定期间隔
< script >
window.setInterval("document.form1.text2.value=document.form1.text1.value",3000)
</ script >
< form name =form1 >
< input type =text name =text1 >< br >
< input type =text name =text2 >< br >
</ form >
8.清除超时和间隔
< script >
stop=window.setInterval("document.form1.text2.value=document.form1.text1.value",300)
</ script >
< form name =form1 >
< input type =text name =text1 >< br >
< input type =text name =text2 >< br >
< input type =button name =button1 value =" 清除超时和间隔" onclick =clearInterval(stop) >
</ form >
第五章 使用函数
1.声明函数
< script >
function quote()
{ document.write("输出语句")
}
</ script >
2.调用函数
< script >
function quote()
{ document.write("输出语句")
}
quote()
</ script >
3.了解全局变量和局部变量
任何不用 var关键字声明的变量都是全局变量,任何在函数外声明的变量都是全局变量
4.将参数传送给函数
< script >
function f(item)
{document.write("输出参数"+item+"<br>")
}
f("fgdfgd")
f("参数二")
</ script >
5.从函数返回值
< script >
function average(var1,var2,var3)
{ave=(var1+var2+var3)/3;
document.write("输出结果");
return ave;
}
document.write(average(34,56,78))
</ script >
6.通过HTML链接调用函数
< script >
function quote(){
document.write(" 输出字符串")
}
</ script >
< a href =javascript:quote() > 通过HTML链接调用函数 </ a >
< a href =javascript:Document.write("输出字符") > 通过HTML链接调用函数,直接写javascript语句 </ a >
第六章 处理事件
1.检查鼠标单击
< form name =form1 >
< input type =button name =button1 value =hello onclick =document.form1.button1.value='there' >
</ form >
2.检测双击
< form name =form1 >
< input type =button name =button1 value =hello onclick =document.form1.button1.value='你单击了按钮' ondblclick =document.form1.button1.value='你双击了该按钮' >
</ form >
3.创建悬停按钮
< img src =go.gif onmouseover =document.images[0].src='go2.gif' onmouseout = document.images[0].src='go.gif' >
4.检测按键
< form name =form1 >
< input type =text name =text1 value =hello onkeypress ="if(window.event.keyCode=='100') document.form1.text1.value='你按了d键'" >
</ form >
5.设置焦点
< form name =form1 >
< input type =text name =text1 value =hello
onfous =document.form1.text1.value='该文本框获得焦点'
onblur =document.form1.text1.value='该文本框失去焦点' >
</ form >
6.检测下拉菜单选择
< form name =form1 >
< select name =select1 size =4
onChange =document.form1.text1.value=document.form1.select1.value >
< option value ="北京" > 北京 </ option >
< option value ="上海" > 上海 </ option >
< option value ="武汉" > 武汉 </ option >
< option value ="天津" > 天津 </ option >
< option value ="大连" > 大连 </ option >
</ select >
< input tppe =text name =text1 value =hello >
</ form >
7.创建网页加载和卸载信息
< body onload =document.form1.text1.value='页面加载完毕' onunload =alert('再见,欢迎再来') >
< form name =form1 >
< input type =text name =text1 value ="页面正在加载 ……" >
</ form >
第七章 使用对象
1.理解对象\属性和方法
< body bgcolor ="green" >
< script >
document.write("页面背景颜色是:"+document.bgColor)
document.write("页面前景颜色是:"+document.fgColor)
</ script >
2.使用网页元素对象
< script >
</ script >
< form name =form1 >
< textarea name =ta1 > dfgfdgfdhfdhdfdfgdf </ textarea >
< input type =button value ="选择文本" onclick =document.form1.ta1.select() >
< input type =button value ="显示文本" onclick =document.write(document.form1.ta1.value) >
</ form >
3.使用子对象
< form name =form1 >
< input type =text name =text1 value =hello >
</ form >
< script >
document.form1.text1.value="gdfgfd"
</ script >
< form name =form1 >
< input type =radio name =radio1 > 男
< input type =radio name =radio2 > 女
</ script >
< script >
document.form1.radio1.checked=true
</ script >
4.使用预定义对象
< script >
str1="dgdfgdfgdfhf固定法固定法功夫攻打法"
document.write(str1+"<br>")
str2=str1.substr(5)
document.write(str2+"<br>")
document.write("输出圆的面积:"+Math.PI*Math.pow(5.0,2))
</ script >
5.创建新对象
< script >
today=new Date()
document.write("今天是"+(today.getMonth()+1)+"月"+today.getDate()+"日"+"<br>")
document.write("现在是:"+today.toLocaleString())
</ script >
6.引用当前对象
< form name =form1 >
< input type =text name =text1 value ="dgdgdfgfd" onclick =this.select() >
</ script >
7.查看对象属性
< script >
for(prop in window)
{document.write("window."+prop+"="+window[prop]+"<br>");}
for(prop2 in location)
{document.write("location."+prop2+"="+location[prop]+"<br>");}
</ script >
8.使用Array对象
< script >
array=new Array(10)
array[0]="bark"
array[1]="apple"
array[2]="nebula"
array[3]="cookie"
array[4]="technology"
document.write("数组元素个数是"+array.Length+"<br>")
document.write("用 join将数组合并"+array.join(" ")+"<br>")
document.write(" 数组排序"+array.sort())
</ script >
9.使用 image 对象
< img src =**.gif alt ="图片提示…." border =10 >
< script >
document.write("图片提示是:"+document.images[0].alt+"<br>")
document.write("图片边框大小是:"+document.images[0].broder)
</ script >
10.预加载图像
< script >
freddy=new Image()
freddy.src=freddy.gif
</ script >
< body onload =document.images[0].src=freddy.src >
, < img src ="blank.gif" >
</ body >
11.改变图像
< img src =freddy.gif >< br >
< form name =form1 >
< input type =button name =button1 value ="改变图像" onclickd =document.images[0].src=dudjp.gif >
</ form >
12.使用link和anchor对象
< a name =anchor1 > 锚点1 < br >
< a href =http://www.microsoft.com > Microsoft </ a >< br >
< a href =http://www.sohu.com > sohu </ a >< br >
< a href =http://www.sina.com.cn > sina </ a >< br >
< script >
document.write("本页面共有"+document.links.length+"链接"+"<br>")
document.write("本页面共有"+document.anchors.length+"锚点"+"<br>")
document.write("第一个链接协议是"+document.links[0].protocol+"<br>")
document.write("第一个链接路径是"+document.links[0].pathnamel+"<br>")
document.write("第一个链接href是"+document.links[0].hrefl+"<br>")
</ script >
13.改变链接
< a href =http://www.microsoft.com > link </ a >
< form name =form1 >
< input type =button name =button1 value ="改变链接" onclick =document.links[0].href='http://www.sohu.com' >
</ form >
14.使用history对象
< form name =form1 >
< input type =button name =button1 value ="向后返回2页" onclick =window.history.go(-2) >
</ form >
第八章 使用窗口
1.在浏览器的状态栏上显示文本
< body onload =window.status="欢迎光临我的站点" >
< a href =http://www.sohu.com > sohu </ a >
</ body >
2.改变背景色
< script >
document.bgColor="orange"
</ script >
3.列举背景颜色
< body bgColor =green >
< script >
document.write("当前背景色是:"+document.bgColor)
</ script >
</ body >
4.改变文本和链接颜色
< script >
document.bgColor="orange"
document.fgColor="blue"
document.linkColor="red"
</ script >
< h2 > 看看这段文本颜色 </ h2 >
< a href =http://www.sohu.com > sohu </ a >
</ body >
5.改变文档标题
< script >
name="Mouse"
document.title="welcome to "+name+"'s House"
document.write(document.title)
</ script >
6.显示修改日期
< script >
document.write("本页面最后修改时间是"+document.lastModified)
</ script >
7.查看当前文档的URL
< script >
document.write("本页面的URL:"+document.URL)
</ script >
8.查看引用页
< script >
document.write("本页面的引用页是"+document.referrer)
</ script >
9.打开新的浏览器窗口
< script >
window.open("*.htm","title","width=200,height=400,resizable=yes")
</ script >
10.关闭远程窗口
close.html:
< script >
document.write("正文")
</ script >
< form name =form1 >
< input type =button name =button1value="关闭" onclick =window.close() >
</ form >
open.html
< script >
window.open("close.html","romote","width=200,height=400,resizable=yes")
</ script >
11.打印窗口
< script >
document.write("正文")
</ script >
< form name =form1 >
< input type =button value =打印 onclick =window.print() >
</ form >
12.移动窗口
< form name =form1 >
水平方向 < input type =text name =x value =20 >
垂直方向 < input type =text name =y value =50 >
< input type =button value ="移动窗口到…" onclick =window.moveTo(document.form1.x.value,document.form1.y.value) >
</ form >
< form name =form1 >
水平方向 < input type =text name =x value =20 >
垂直方向 < input type =text name =y value =50 >
< input type =button value ="移动窗口" onclick =window.moveBy(document.form1.x.value,document.form1.y.value) >
</ form >
13.改变窗口大小
< form name =form1 >
水平方向 < input type =text name =x value =200 >
垂直方向 < input type =text name =y value =500 >
< input type =button value ="改变窗口大小到….." onclick =window.resizeTo(document.form1.x.value,document.form1.y.value) >
</ form >
< form name =form1 >
水平方向 < input type =text name =x value =200 >
垂直方向 < input type =text name =y value =500 >
< input type =button value ="改变窗口大小" onclick =window.resizeBy(document.form1.x.value,document.form1.y.value) >
</ form >
14.用警告对话框通知用户
< script >
window.alert("welcome")
</ script >
15.用提示对话框接受输入
< script >
name=window.prompt("输入姓名","姓名")
document.write(" 欢迎您:"+name+"来到这里")
</ script >
16.用确认对话框使用户做出决定
< script >
like=window.confirm("你觉得好吗?")
if(like==true)
document.write("谢谢你的夸奖")
else
document.write("希望得到你的夸奖")
</ script >
第九章 使用字符串
1.使用字符串对象
< script >
mystring="gdgdfgfddddaaaaaaaaaaaabbbbbbbbbbbbbbbbbvbhg.<br>"
document.write(mystring)
document.write(mystring.bold())
document.write(mystring.toUpperCase())
</ script >
2.使用子字符串
< script >
str1="fdsf 1111 gfdgfd dfdsf cccc dddd.<br>"
document.write(str1)
document.write(str1.substring(0,13)+"<br>")
document.write(str1.substr (20,11)+"<br>")
</ script >
3.连接字符串
< script >
str1="may you find"
str2="peace,happiness and prosperity.<br>"
document.write(str1+"<br>")
document.write(str2)
document.write(str1.concat(str2))
document.write(str1+=str2)
</ script >
4.格式化字符串变量
< script >
str1="peace,happiness and prosperity.<br>"
document.write(str1)
document.write(str1.big())
document.write(str1.small())
document.write(str1.bold())
document.write(str1.italics())
document.write(str1.strike())
document.write(str1.fontsize(6))
document.write(str1.fontcolor(green))
</ script >
5.创建锚和链接
< script >
str1="this is the bigginning of the page.<br>"
str2="….<br>"
str3="this is the end of the page .<br>"
str4="link to the start<br>"
str5="link to the end<br>"
document.write(str1.anchor("start"))
for(i=0;i<10;i++)
document.write(str2);
document.write(str3.anchor("end"))
document.write(str4.link("#start"))
document.write(str5.link("#end"))
</ script >
6.确定字符串长度
< script >
str1="this is the bigginning of the page."
document.write(str1+"<br>")
document.write( "字符串的长度是:"+str1.length)
document.write("字符串全部大写是;"+str1.toUpperCase())
document.write("字符串全部小写是;"+str1.toLowerCase())
</ script >
7.在字符串内搜索
< script >
str1="this is the end of the line.<br>"
document.write(str1)
document.write("字符end在字符串的位置是"+str1.search("end"))
document.write("字符dog在字符串的位置是"+str1.search("dog"))
</ script >
8.定位字符串中的字符
< script >
str1="spring is a time for flowers and trees and baby bunnles<br>"
document.write(str1)
document.write("the index for the second word ‘and' is"+str1.indexOf("and",30))
documednt.write("the last index of the word ‘and' is "+str1.lastIndexOf("and"))
</ script >
9.替换字符串中的文本
< script >
str1="spring is a time for flowers and trees and baby bunnles<br>"
document.write(str1)
document .write(str1.replace("and",","))
</ script >
10.字符串分离
< script >
str1="spring is a time for flowers and trees and baby bunnles<br>"
document.write(str1)
str1array=str1.split(" ")
document.write(str1array[0]+"<br>")
document.write(str1array[1]+"<br>")
document.write(str1array[2]+"<br>")
document.write(str1array[3]+"<br>")
</ script >
第十章 使用日期和时间
1.使用Date对象
< script >
cdate=new Date("august 2,1989 12:30:00")
document.write(cdate)
</ script >
2.显示当地时间和日期
< script >
cdate=new Date()
document.write("当前时间是:"+cdate.toGMTString()+"<br>")
document.write("日期和时间是:"+cdate.toLocaleString())
</ script >
3.获得时间和日期值
< script >
cdate=new Date()
document.write("显示当前的星期"+cdate.getDay()+"<br>")
document.write("显示当前的月份"+cdate.getMonth()+"<br>")
document.write("显示当前的日期"+cdate.getDay()+"<br>")
document.write("显示当前的年份"+cdate.getYear()+"<br>")
document.write("显示当前的小时"+cdate.getHours()+"<br>")
document.write("显示当前的分钟"+cdate.getMinutes()+"<br>")
document.write("显示当前的秒"+cdate.getSeconds()+"<br>")
</ script >
4.设置时间和日期值
< script language =javascript >
cdate=new Date("December 25,1984")
document.write("显示日期"+cdate+"<br>")
document.write("设置月份"+cdate.setMonth(10)+"<br>")
document.write("设置日期"+cdate.setDate(23)+"<br>")
document.write("设置年份"+cdate.setYear(2000)+"<br>")
document.write("设置小时"+cdate.setHours(13)+"<br>");
document.write("设置分钟"+cdate.setMinutes(47)+"<br>");
document.write("设置秒"+cdate.setSeconds(23)+"<br>");
document.write("显示设置后的日期和时间"+cdate);
</ script >
第十一章 使用Math对象
1. 使用Math对象
< script language =javascript >
</ script >
< form name =form1 >
圆的半径: < input type =text name =rad >< br >
圆的面积: < input type =text name =area >< br >
< input type =button name =button1 value =计算圆的面积 onclick =document.form1.area.value=document.form1.rad.value*document.
form1.rad.value*Math.PI >
</ form >
2.生成随机数
< script >
array1=new Array(
"这是第1句",
"这是第2句",
"这是第3句",
"这是第4句",
"这是第5句",
"这是第6句")
RandomNo=Math.floor(array1.length*Math.random())
document.write("随机输出某一句"+"<br>"+array1[RandomNo])
</ script >
3.使用平方根
< form name =form1 >
value: < input type =text name =va1 >< br >
平方根 < input type =text name =sqrt >< br >
< input type =button name =button1 value =计算平方根
onclick ="document.form1.sqrt.value=Math.sqrt(document.form1.va1.value)" >
</ form >
4.数字的舍入
< form name =form1 >
输入 < input type =text name =val >< br >
舍入的结果 < input type =text name =round >< br >
< input type =button name =button1 value =计算结果 onclick =document.form1.round.value=Math.round(document.form1.val.value) >
</ form >
5.乘方运算
< form name =form1 >
底数 < input type =text name =val >< br >
指数 < input type =text name =power >< br >
幂 < input type =text name =result >< br >
< input type =button name =button1 value =计算结果 onclick ="document.form1.result.value=Math.pow (document.form1.val.value,document.form1.power.value)" >
</ form >
6.发现最小值和最大值
< form name =form1 >
数字1 < input type =text name =val1 >< br >
数字2 < input type =text name =val2 >< br >
最小值 < input type =text name =min >< br >
最大值 < input type =text name =max >< br >
数字1 < input type =button value =计算 onclick ="document.form1.min.value=Math.min (document.form1.val1.value,document.form1.val2.value);document.form1.
max.value= Math.max(document.form1.val1.value,document.form1.val2.value)" >
</ form >
第十二章 使用表单
1.使用文本框
< form name =form1 >
< input type =text value ="information ,please" name =text1 >
</ form >
< script >
document.write("表单text1类型是: "+document.form1.text1.type+"<br>")
document.write("表单text1名称是: "+document.form1.text1.name+"<br>")
document.write("表单text1值是: "+document.form1.text1.value+"<br>")
document.write("表单text1大小是: "+document.form1.text1.size+"<br>")
</ script >
< form name =form1 >
< input type =text name =text1 value =click here
onfocus =document.form1.text1.select() >
</ form >
2.使用密码框
< form name =form1 >
< input type =password name =pw1 value =daylight >
</ form >
< script >
document.write("表单pw1的类型:"+document.form1.pw1.type+"<br>")
document.write("表单pw1的名称:"+document.form1.pw1.name+"<br>")
document.write("表单pw1的值:"+document.form1.pw1.value+"<br>")
document.write("表单pw1的大小:"+document.form1.pw1.size+"<br>")
</ script >
3.使用隐藏字段
< form name =form1 >
< input type =hidden name =hid1 value =piece of eight >
</ form >
< script >
document.write("表单hid1的类型:"+document.form1.hid1.type+"<br>")
document.write("表单hid1的名称:"+document.form1.hid1.name+"<br>")
document.write("表单hid1的值:"+document.form1.hid1.value+"<br>")
</ script >
4.使用文本区域框
< form name =form1 >
< textarea name =ta1 > how many grains of sand are there in the sahara desert? </ textarea >
</ form >
< script >
document.write("表单ta1的类型:"+document.form1.ta1.type+"<br>")
document.write("表单ta1的名称:"+document.form1.ta1.name+"<br>")
document.write("表单ta1的值:"+document.form1.ta1.value+"<br>")
document.write("表单ta1的横向宽度:"+document.form1.ta1.cols+"<br>")
document.write("表单ta1的纵向宽度:"+document.form1.rows.value+"<br>")
</ script >
6.使用重置按钮
< form name =form1 >
< input type =reset name =reset1 value ="rest form" >
</ form >
< script >
document.write("表单reset1的类型:"+document.form1.reset1.type+"<br>")
document.write("表单reset1的名称:"+document.form1.reset1.name+"<br>")
document.write("表单reset1的值:"+document.form1.reset1.value+"<br>")
</ script >
7.使用提交按钮
< form name =form1 >
< input type =submit name =submit1 value ="submit form" >
</ form >
< script >
document.write("表单submit1的类型:"+document.form1.submit1.type+"<br>")
document.write("表单submit1的名称:"+document.form1.submit1.name+"<br>")
document.write("表单submit1的值:"+document.form1.submit1.value+"<br>")
</ script >
8.使用复选按钮
< form name =form1 >
< input type =checkbox name =cb1 > computer savvy?
</ form >
< script >
document.write("表单cb1的类型:"+document.form1.cb1.type+"<br>")
document.write("表单cb1是否被选择?:"+document.form1.cb1.checked+"<br>")
document.write("表单cb1的名称:"+document.form1.cb1.name+"<br>")
</ script >
9.使用单选按钮
< form name =form1 >
< input type =radio name =radio1 > male
< input type =radio name =radio1 > female
</ form >
< script >
document.write("第一个按钮被选择"+document.form1.radio1[0].checked+"<br>")
document.write("第二个按钮被选择"+document.form1.radio1[1].checked+"<br>")
document.write("按钮的名称"+ document.form1.radio1[0].name+"<br>")
document.write("按钮的个数"+document.form1.radio1.length)
</ script >
10.使用选择列表
< form name =form1 >
< select name =select1 size =4 >
< option name =option1 value =lon > london,England </ option >
< option name =option2 value =dub > Dublin,Ireland </ option >
</ select >
</ form >
< script >
document.write("这个选择列表的名称"+document.form1.select1.name+"<br>")
document.write("这个选择列表的长度"+document.form1.select1.length+"<br>")
document.write("这个选择列表当前被选择的索引号"+document.form1.select1.selectedIndex+"<br>")
document.write("这个选择列表的尺寸"+document.form1.select1.size+"<br>")
</ script >
11.验证表单的有效性
< script >
function validate(){
if(document.form1.text1.value!='1'||'2'||'3'||'4'){
alert("请输入1~4的整数")
}
}
</ script >
< form name =form1 >
请输入1~4的整数:
< input type =text name =text1 size =4 onchange =validate() >
</ form >
12.控制表单焦点
< form name =form1 >
< input type =text name =text1 value =where is you focus? >< br >
< input type =text name =text2 value =is there? >< br >
< input type =text name =text3 value =or maybe here? >< br >
< input type =button name =button1 value ="text box #1" onclick =document.form1.text1.focus() >< br >
< input type =button name =button2 value ="text box #2" onclick =document.form1.text2.focus() >< br >
< input type =button name =button3 value ="text box #3" onclick =document.form1.text3.focus() >< br >
</ form >
第十三章 使用分栏
第十四章 使用navigator
1.使用navigator对象
< script >
document.write("navigator对象的属性"+"<br>")
document.write("appcodename:"+navigator.appCodeName+"<br>")
document.write("appname::"+navigator.appName+"<br>")
document.write("appversion:"+navigator.appVersion+"<br>")
document.write("platform:"+navigator.platform+"<br>")
document.write("userAgent:"+navigator.userAgent+"<br>")
</ script >
< script >
document.write("navigator对象的方法"+"<br>")
document.write("javaEnabled():"+navigator.javaEnabled())
</ script >
2.检查用户的浏览器
< script >
if(navigator.appName.indexOf("Microsoft")!=-1){
document.write("用户浏览器是微软的IE浏览器"+"<br>")}
else if(navigator.appName.indexOf("Netscape")!=-1){
document.write("用户浏览器是netscape的netscape浏览器"+"<br>")}
if(navigator.appVersion.indexOf("4.0")!=-1){
document.write("you are using a version 4.0compatible browser")
}
else{
document.write("this browser is not 4.0 compliant")}
</ script >
3.检测用户的操作系统
< script >
if (navigator.platform.indexOf("win32")!=-1){
document.write("you are using a computer running windows 95 or highter")}
else{
document.write("this computer is not running windows 95 or higher")}
</ script >
4.使用location对象
< script >
document.write("location对象的属性"+"<br>")
document.write("hash"+location.hash+"<br>")
document.write("hostname"+location.hostname+"<br>")
document.write("host"+location.host+"<br>")
document.write("href"+location.href+"<br>")
document.write("port"+location.port+"<br>")
document.write("search"+location.search+"<br>")
</ script >
重新加载网页
< form name =form1 >
< input type =button name =button1 value =重新加载本页 onclick =location.reload >
</ form >
5.使用cookie
< script >
finction makecookie(){
if(!document.cookie){
name=prompt("请输入你的姓名");
document.cookie="name="+name+";";}
}
</ script >
< body onload =makecookie() >
< script >
function makecookie(){
if(!document.cookie){
name=prompt("请输入你的姓名")
document.cookie="name="+name+";";
namestart=document.cookie.indexOf("=");
nameend=document.cookieindexOf(";");
document.writeln("your name is:"+document.cookie.substring(namestart+1,nameend)+",br>")
}
}
</ script >
本文转自高海东博客园博客,原文链接:http://www.cnblogs.com/ghd258/archive/2006/08/19/481320.html,如需转载请自行联系原作者