35个前端常用工具函数（下）

/**
• 获取距离当前时间多久的时间
• @param  type year年/month月/week周/day日 
• @param  number -为之前/+为之后 
*/
export const getBeforAfterTime = function(type=null,number=0) {
var nowdate = new Date();
switch (type) {
case "day":   //取number天前、后的时间
nowdate.setTime(nowdate.getTime() + (24  3600  1000) * number);
var y = nowdate.getFullYear();
var m = nowdate.getMonth() + 1;
var d = nowdate.getDate();
var retrundate = y + '/' + m + '/' + d;
break;
case "week":  //取number周前、后的时间
nowdate.setTime(nowdate.getTime() + (7  24  3600  1000)  number);
var y = nowdate.getFullYear();
var m = nowdate.getMonth() + 1;
var d = nowdate.getDate();
var retrundate = y + '/' + m + '/' + d;
break;
case "month":  //取number月前、后的时间
nowdate.setMonth(nowdate.getMonth() + number);
var y = nowdate.getFullYear();
var m = nowdate.getMonth() + 1;
var d = nowdate.getDate();
var retrundate = y + '/' + m + '/' + d;
break;
case "year":  //取number年前、后的时间
nowdate.setFullYear(nowdate.getFullYear() + number);
var y = nowdate.getFullYear();
var m = nowdate.getMonth() + 1;
var d = nowdate.getDate();
var retrundate = y + '/' + m + '/' + d;
break;
default:     //取当前时间
var y = nowdate.getFullYear();
var m = nowdate.getMonth() + 1;
var d = nowdate.getDate();
var retrundate = y + '/' + m + '/' + d;
}
return retrundate;
}

export function isEmail (s) {
return /^([a-zA-Z0-9-])+@([a-zA-Z0-9-])+((.[a-zA-Z0-9_-]{2,3}){1,2})$/.test(s)
}

export function isMobile (s) {
return /^1[0-9]{10}$/.test(s)
}

export function isPhone (s) {
return /^([0-9]{3,4}-)?[0-9]{7,8}$/.test(s)
}

export function isQQ (s) {
return /[1-9][0-9]{4,}/.test(s)
}

export function isURL (s) {
return /^http[s]?://.*/.test(s)
}

export function validateURL (textval) {
const urlregex = /^(https?|ftp)://([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%
|[a-zA-Z0-9.,?'\+&%
/
return urlregex.test(textval)
}

export function validateLowerCase (str) {
const reg = /[1]+$/
return reg.test(str)
}

export function validateUpperCase (str) {
const reg = /[2]+$/
return reg.test(str)
}

export function validatAlphabets (str) {
const reg = /[3]+$/
return reg.test(str)
}

export const vaildatePc = function () {
const userAgentInfo = navigator.userAgent
const Agents = ['Android', 'iPhone',
'SymbianOS', 'Windows Phone',
'iPad', 'iPod'
]
let flag = true
for (var v = 0; v < Agents.length; v++) {
if (userAgentInfo.indexOf(Agents[v]) > 0) {
flag = false
break
}
}
return flag
}

export function validatename (name) {
var regName = /[4]{2,4}$/
if (!regName.test(name)) return false
return true
}

export function validatePwd (pwd) {
var regName = /^(?![0-9]+)[0-9A-Za-z]{8,16}$/
if (!regName.test(pwd)) return false
return true
}

export function validatePwd (pwd) {
var regName = /(^(?![A-Z]+)(?!\d+)\S+$)/
if (!regName.test(pwd)) return false
return true
}

export function validatePwd (pwd) {
var regName =  /(^(?=.[a-zA-Z])(?=.\d)(?=.*[~!@#)/
if (!regName.test(pwd)) return false
return true
}

export function validatenum (num, type) {
let regName = /[^\d.]/g
if (type == 1) {
if (!regName.test(num)) return false
} else if (type == 2) {
regName = /[^\d]/g
if (!regName.test(num)) return false
}
return true
}

export function validatenumord (num, type) {
let regName = /[^\d.]/g
if (type == 1) {
if (!regName.test(num)) return false
} else if (type == 2) {
regName = /[^\d.]/g
if (!regName.test(num)) return false
}
return true
}

export function validatenull (val) {
if (typeof val === 'boolean') {
return false
}
if (typeof val === 'number') {
return false
}
if (val instanceof Array) {
if (val.length == 0) return true
} else if (val instanceof Object) {
if (JSON.stringify(val) === '{}') return true
} else {
if (val == 'null' || val == null || val == 'undefined' || val == undefined || val == '') return true
return false
}
return false
}

export function cardid (code) {
let list = []
let result = true
let msg = ''
var city = {
11: '北京',
12: '天津',
13: '河北',
14: '山西',
15: '内蒙古',
21: '辽宁',
22: '吉林',
23: '黑龙江 ',
31: '上海',
32: '江苏',
33: '浙江',
34: '安徽',
35: '福建',
36: '江西',
37: '山东',
41: '河南',
42: '湖北 ',
43: '湖南',
44: '广东',
45: '广西',
46: '海南',
50: '重庆',
51: '四川',
52: '贵州',
53: '云南',
54: '西藏 ',
61: '陕西',
62: '甘肃',
63: '青海',
64: '宁夏',
65: '新疆',
71: '台湾',
81: '香港',
82: '澳门',
91: '国外 '
}
if (!validatenull(code)) {
if (code.length == 18) {
if (!code || !/(^\d{18})/.test(code)) {
msg = '证件号码格式错误'
} else if (!city[code.substr(0, 2)]) {
msg = '地址编码错误'
} else {
// 18位身份证需要验证最后一位校验位
code = code.split('')
// ∑(ai×Wi)(mod 11)
// 加权因子
var factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2]
// 校验位
var parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2, 'x']
var sum = 0
var ai = 0
var wi = 0
for (var i = 0; i < 17; i++) {
ai = code[i]
wi = factor[i]
sum += ai * wi
}
if (parity[sum % 11] != code[17]) {
msg = '证件号码校验位错误'
} else {
result = false
}
}
} else {
msg = '证件号码长度不为18位'
}
} else {
msg = '证件号码不能为空'
}
list.push(result)
list.push(msg)
return list
}