一、猜数字
页面如下:
我们想在文本框输入我们想猜的数字,点击猜后下面就会提示我们猜的数字是否正确,以及大了还是小了。
html代码:
<button id="reset">重新开始一局游戏</button><br/> 请输入要猜的数字:<input type="text" id ="guessNum"> <button id="userGuess">猜</button><br/> 已经猜的次数:<span id="count"></span><br/> 结果:<span id="result"></span>
点击 猜 按钮的js代码:
var number = Math.floor(Math.random() * 100) + 1;//要猜的数字 console.log("number:" + number);//答案 var count = 0; //点击猜,看看猜的数字对不对 $(document).ready(function() { $("#userGuess").click(function() { count++; $("#count").text(count); var guessNum = $("#guessNum").val(); if(guessNum > number) { $("#result").text("猜大了"); $("#result").css("color", "red"); } else if(guessNum < number) { $("#result").text("猜小了"); $("#result").css("color", "red"); } else { $("#result").text("猜对了"); $("#result").css("color", "green"); } }); });
点击 重开游戏 按钮的js代码:
//点击重开游戏 $(document).ready(function() { $("#reset").click(function() { number = Math.floor(Math.random() * 100) + 1; console.log("要猜的数字:" + number); count = 0; $("#count").text(""); $("#result").text(""); $("#result").css("color", ""); $("#guessNum").val(""); }); });
整体代码:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <button id="reset">重新开始一局游戏</button><br/> 请输入要猜的数字:<input type="text" id ="guessNum"> <button id="userGuess">猜</button><br/> 已经猜的次数:<span id="count"></span><br/> 结果:<span id="result"></span> <script src="jquery-3.7.1.min.js"></script></body> <script> var number = Math.floor(Math.random() * 100) + 1;//要猜的数字 console.log("number:" + number); var count = 0; //点击猜,看看猜的数字对不对 $(document).ready(function() { $("#userGuess").click(function() { count++; $("#count").text(count); var guessNum = $("#guessNum").val(); if(guessNum > number) { $("#result").text("猜大了"); $("#result").css("color", "red"); } else if(guessNum < number) { $("#result").text("猜小了"); $("#result").css("color", "red"); } else { $("#result").text("猜对了"); $("#result").css("color", "green"); } }); }); //点击重开游戏 $(document).ready(function() { $("#reset").click(function() { number = Math.floor(Math.random() * 100) + 1; console.log("要猜的数字:" + number); count = 0; $("#count").text(""); $("#result").text(""); $("#result").css("color", ""); $("#guessNum").val(""); }); }); </script> </body> </html>
页面效果:
猜几次:
重开游戏:
猜几次:
没有问题。
二、留言板
页面如下:
css代码:
<title>留言板</title> <style> .container { width: 350px; height: 300px; margin: 0 auto; /* border: 1px black solid; */ text-align: center; } .grey { color: grey; } .container .row { width: 350px; height: 40px; display: flex; justify-content: space-between; align-items: center; } .container .row input { width: 260px; height: 30px; } #submit { width: 350px; height: 40px; background-color: orange; color: white; border: none; margin: 10px; border-radius: 5px; font-size: 20px; } </style>
html代码:
<div class="container"> <h1>留言板</h1> <p class="grey">输入后点击提交, 会将信息显示下方空白处</p> <div class="row"> <span>谁:</span> <input type="text" name="" id="from"> </div> <div class="row"> <span>对谁:</span> <input type="text" name="" id="to"> </div> <div class="row"> <span>说什么:</span> <input type="text" name="" id="say"> </div> <input type="button" value="提交" id="submit" onclick="submit()"> <!-- <div>A 对 B 说: hello</div> --> </div>
js代码(主逻辑在这):
<script src="jquery-3.7.1.min.js"></script> <script> function submit() { var from = $("#from").val(); var to = $("#to").val(); var say = $("#say").val(); var content = "<div>" + from + "对" + to + "说" + say + "</div>"; console.log(content); $(".container").append(content); $("#from").val(""); $("#to").val(""); $("#say").val(""); }; </script>
整体代码:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>留言板</title> <style> .container { width: 350px; height: 300px; margin: 0 auto; /* border: 1px black solid; */ text-align: center; } .grey { color: grey; } .container .row { width: 350px; height: 40px; display: flex; justify-content: space-between; align-items: center; } .container .row input { width: 260px; height: 30px; } #submit { width: 350px; height: 40px; background-color: orange; color: white; border: none; margin: 10px; border-radius: 5px; font-size: 20px; } </style> </head> <body> <div class="container"> <h1>留言板</h1> <p class="grey">输入后点击提交, 会将信息显示下方空白处</p> <div class="row"> <span>谁:</span> <input type="text" name="" id="from"> </div> <div class="row"> <span>对谁:</span> <input type="text" name="" id="to"> </div> <div class="row"> <span>说什么:</span> <input type="text" name="" id="say"> </div> <input type="button" value="提交" id="submit" onclick="submit()"> <!-- <div>A 对 B 说: hello</div> --> </div> <script src="jquery-3.7.1.min.js"></script> <script> function submit() { var from = $("#from").val(); var to = $("#to").val(); var say = $("#say").val(); var content = "<div>" + from + "对" + to + "说" + say + "</div>"; console.log(content); $(".container").append(content); $("#from").val(""); $("#to").val(""); $("#say").val(""); }; </script> </body> </html>
页面效果:
点击提交,留言就会显示到下方。
多提交几次: