JavaScript里那些有趣的正则表达式

Author： YH_evIs
发布时间：July 14, 2020
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23699字数
Categories： JavaScript 手册

> 生产环境慎用

1.邮箱

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

2.手机号码

```javascript
export const isMobile = (s) => {
return /^1[0-9]{10}$/.test(s)
}
```

3.电话号码

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

4.是否url地址

```javascript
export const isURL = (s) => {
return /^http[s]?:\/\/.*/.test(s)
}
```

5.是否字符串

```javascript
export const isString = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'String'
}
```

6.是否数字

```javascript
export const isNumber = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Number'
}
```

7.是否boolean

```javascript
export const isBoolean = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Boolean'
}
```

8.是否函数

```javascript
export const isFunction = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Function'
}
```

9.是否为null

```javascript
export const isNull = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Null'
}
```

10.是否undefined

```javascript
export const isUndefined = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Undefined'
}
```

11.是否对象

```javascript
export const isObj = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Object'
}
```

12.是否数组

```javascript
export const isArray = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Array'
}
```

13.是否时间

```javascript
export const isDate = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Date'
}
```

14.是否正则

```javascript
export const isRegExp = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'RegExp'
}
```

15.是否错误对象

```javascript
export const isError = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Error'
}
```

16.是否Symbol函数

```javascript
export const isSymbol = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Symbol'
}
```

17.是否Promise对象

```javascript
export const isPromise = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Promise'
}
```

18.是否Set对象

```javascript
export const isSet = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Set'
}
export const ua = navigator.userAgent.toLowerCase();
```

19.是否是微信浏览器

```javascript
export const isWeiXin = () => {
return ua.match(/microMessenger/i) == 'micromessenger'
}
```

20.是否是移动端

```javascript
export const isDeviceMobile = () => {
return /android|webos|iphone|ipod|balckberry/i.test(ua)
}
```

21.是否是QQ浏览器

```javascript
export const isQQBrowser = () => {
return !!ua.match(/mqqbrowser|qzone|qqbrowser|qbwebviewtype/i)
}
```

22.是否是爬虫

```javascript
export const isSpider = () => {
return /adsbot|googlebot|bingbot|msnbot|yandexbot|baidubot|robot|careerbot|seznambot|bot|baiduspider|jikespider|symantecspider|scannerlwebcrawler|crawler|360spider|sosospider|sogou web sprider|sogou orion spider/.test(ua)
}
```

23.是否ios

```javascript
export const isIos = () => {
var u = navigator.userAgent;
if (u.indexOf('Android') > -1 || u.indexOf('Linux') > -1) {  //安卓手机
return false
} else if (u.indexOf('iPhone') > -1) {//苹果手机
return true
} else if (u.indexOf('iPad') > -1) {//iPad
return false
} else if (u.indexOf('Windows Phone') > -1) {//winphone手机
return false
} else {
return false
}
}
```

24.是否为PC端

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

25.去除html标签

```javascript
export const removeHtmltag = (str) => {
return str.replace(/<[^>]+>/g, '')
}
```

26.获取url参数

```javascript
export const getQueryString = (name) => {
const reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i');
const search = window.location.search.split('?')[1] || '';
const r = search.match(reg) || [];
return r[2];
}
```

27.动态引入js

```javascript
export const injectScript = (src) => {
const s = document.createElement('script');
s.type = 'text/javascript';
s.async = true;
s.src = src;
const t = document.getElementsByTagName('script')[0];
t.parentNode.insertBefore(s, t);
}
```

28.根据url地址下载

```javascript
export const download = (url) => {
var isChrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
var isSafari = navigator.userAgent.toLowerCase().indexOf('safari') > -1;
if (isChrome || isSafari) {
var link = document.createElement('a');
link.href = url;
if (link.download !== undefined) {
var fileName = url.substring(url.lastIndexOf('/') + 1, url.length);
link.download = fileName;
}
if (document.createEvent) {
var e = document.createEvent('MouseEvents');
e.initEvent('click', true, true);
link.dispatchEvent(e);
return true;
}
}
if (url.indexOf('?') === -1) {
url += '?download';
}
window.open(url, '_self');
return true;
}
```

29.el是否包含某个class

```javascript
export const hasClass = (el, className) => {
let reg = new RegExp('(^|\\s)' + className + '(\\s|$)')
return reg.test(el.className)
}
```

30.el添加某个class

```javascript
export const addClass = (el, className) => {
if (hasClass(el, className)) {
return
}
let newClass = el.className.split(' ')
newClass.push(className)
el.className = newClass.join(' ')
}
```

31.el去除某个class

```javascript
export const removeClass = (el, className) => {
if (!hasClass(el, className)) {
return
}
let reg = new RegExp('(^|\\s)' + className + '(\\s|$)', 'g')
el.className = el.className.replace(reg, ' ')
}
```

32.获取滚动的坐标

```javascript
export const getScrollPosition = (el = window) => ({
x: el.pageXOffset !== undefined ? el.pageXOffset : el.scrollLeft,
y: el.pageYOffset !== undefined ? el.pageYOffset : el.scrollTop
});
```

33.滚动到顶部

```javascript
export const scrollToTop = () => {
const c = document.documentElement.scrollTop || document.body.scrollTop;
if (c > 0) {
window.requestAnimationFrame(scrollToTop);
window.scrollTo(0, c - c / 8);
}
}
```

34.el是否在视口范围内

```javascript
export const elementIsVisibleInViewport = (el, partiallyVisible = false) => {
const { top, left, bottom, right } = el.getBoundingClientRect();
const { innerHeight, innerWidth } = window;
return partiallyVisible
? ((top > 0 && top < innerHeight) || (bottom > 0 && bottom < innerHeight)) &&
((left > 0 && left < innerWidth) || (right > 0 && right < innerWidth))
: top >= 0 && left >= 0 && bottom <= innerHeight && right <= innerWidth;
}
```

35.洗牌算法随机

```javascript
export const shuffle = (arr) => {
var result = [],
random;
while (arr.length > 0) {
random = Math.floor(Math.random() * arr.length);
result.push(arr[random])
arr.splice(random, 1)
}
return result;
}
```

36.劫持粘贴板

```javascript
export const copyTextToClipboard = (value) => {
var textArea = document.createElement("textarea");
textArea.style.background = 'transparent';
textArea.value = value;
document.body.appendChild(textArea);
textArea.select();
try {
var successful = document.execCommand('copy');
} catch (err) {
console.log('Oops, unable to copy');
}
document.body.removeChild(textArea);
}
```

37.判断类型集合

```javascript
export const checkStr = (str, type) => {
switch (type) {
case 'phone':   //手机号码
return /^1[3|4|5|6|7|8|9][0-9]{9}$/.test(str);
case 'tel':     //座机
return /^(0\d{2,3}-\d{7,8})(-\d{1,4})?$/.test(str);
case 'card':    //身份证
return /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/.test(str);
case 'pwd':     //密码以字母开头，长度在6~18之间，只能包含字母、数字和下划线
return /^[a-zA-Z]\w{5,17}$/.test(str)
case 'postal':  //邮政编码
return /[1-9]\d{5}(?!\d)/.test(str);
case 'QQ':      //QQ号
return /^[1-9][0-9]{4,9}$/.test(str);
case 'email':   //邮箱
return /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/.test(str);
case 'money':   //金额(小数点2位)
return /^\d*(?:\.\d{0,2})?$/.test(str);
case 'URL':     //网址
return /(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?/.test(str)
case 'IP':      //IP
return /((?:(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d))/.test(str);
case 'date':    //日期时间
return /^(\d{4})\-(\d{2})\-(\d{2}) (\d{2})(?:\:\d{2}|:(\d{2}):(\d{2}))$/.test(str) || /^(\d{4})\-(\d{2})\-(\d{2})$/.test(str)
case 'number':  //数字
return /^[0-9]$/.test(str);
case 'english': //英文
return /^[a-zA-Z]+$/.test(str);
case 'chinese': //中文
return /^[\\u4E00-\\u9FA5]+$/.test(str);
case 'lower':   //小写
return /^[a-z]+$/.test(str);
case 'upper':   //大写
return /^[A-Z]+$/.test(str);
case 'HTML':    //HTML标记
return /<("[^"]*"|'[^']*'|[^'">])*>/.test(str);
default:
return true;
}
}
```

38.严格的身份证校验

```javascript
export const isCardID = (sId) => {
if (!/(^\d{15}$)|(^\d{17}(\d|X|x)$)/.test(sId)) {
console.log('你输入的身份证长度或格式错误')
return false
}
//身份证城市
var aCity = { 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 (!aCity[parseInt(sId.substr(0, 2))]) {
console.log('你的身份证地区非法')
return false
}

// 出生日期验证
var sBirthday = (sId.substr(6, 4) + "-" + Number(sId.substr(10, 2)) + "-" + Number(sId.substr(12, 2))).replace(/-/g, "/"),
d = new Date(sBirthday)
if (sBirthday != (d.getFullYear() + "/" + (d.getMonth() + 1) + "/" + d.getDate())) {
console.log('身份证上的出生日期非法')
return false
}

// 身份证号码校验
var sum = 0,
weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2],
codes = "10X98765432"
for (var i = 0; i < sId.length - 1; i++) {
sum += sId[i] * weights[i];
}
var last = codes[sum % 11]; //计算出来的最后一位身份证号码
if (sId[sId.length - 1] != last) {
console.log('你输入的身份证号非法')
return false
}

return true
}
```

39.随机数范围

```javascript
export const random = (min, max) => {
if (arguments.length === 2) {
return Math.floor(min + Math.random() * ((max + 1) - min))
} else {
return null;
}
}
```

40.将阿拉伯数字翻译成中文的大写数字

```javascript
export const numberToChinese = (num) => {
var AA = new Array("零", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十");
var BB = new Array("", "十", "百", "仟", "萬", "億", "点", "");
var a = ("" + num).replace(/(^0*)/g, "").split("."),
k = 0,
re = "";
for (var i = a[0].length - 1; i >= 0; i--) {
switch (k) {
case 0:
re = BB[7] + re;
break;
case 4:
if (!new RegExp("0{4}//d{" + (a[0].length - i - 1) + "}$")
.test(a[0]))
re = BB[4] + re;
break;
case 8:
re = BB[5] + re;
BB[7] = BB[5];
k = 0;
break;
}
if (k % 4 == 2 && a[0].charAt(i + 2) != 0 && a[0].charAt(i + 1) == 0)
re = AA[0] + re;
if (a[0].charAt(i) != 0)
re = AA[a[0].charAt(i)] + BB[k % 4] + re;
k++;
}

if (a.length > 1) // 加上小数部分(如果有小数部分)
{
re += BB[6];
for (var i = 0; i < a[1].length; i++)
re += AA[a[1].charAt(i)];
}
if (re == '一十')
re = "十";
if (re.match(/^一/) && re.length == 3)
re = re.replace("一", "");
return re;
}
```

41.将数字转换为大写金额

```javascript
export const changeToChinese = (Num) => {
//判断如果传递进来的不是字符的话转换为字符
if (typeof Num == "number") {
Num = new String(Num);
};
Num = Num.replace(/,/g, "") //替换tomoney()中的“,”
Num = Num.replace(/ /g, "") //替换tomoney()中的空格
Num = Num.replace(/￥/g, "") //替换掉可能出现的￥字符
if (isNaN(Num)) { //验证输入的字符是否为数字
//alert("请检查小写金额是否正确");
return "";
};
//字符处理完毕后开始转换，采用前后两部分分别转换
var part = String(Num).split(".");
var newchar = "";
//小数点前进行转化
for (var i = part[0].length - 1; i >= 0; i--) {
if (part[0].length > 10) {
return "";
//若数量超过拾亿单位，提示
}
var tmpnewchar = ""
var perchar = part[0].charAt(i);
switch (perchar) {
case "0":
tmpnewchar = "零" + tmpnewchar;
break;
case "1":
tmpnewchar = "壹" + tmpnewchar;
break;
case "2":
tmpnewchar = "贰" + tmpnewchar;
break;
case "3":
tmpnewchar = "叁" + tmpnewchar;
break;
case "4":
tmpnewchar = "肆" + tmpnewchar;
break;
case "5":
tmpnewchar = "伍" + tmpnewchar;
break;
case "6":
tmpnewchar = "陆" + tmpnewchar;
break;
case "7":
tmpnewchar = "柒" + tmpnewchar;
break;
case "8":
tmpnewchar = "捌" + tmpnewchar;
break;
case "9":
tmpnewchar = "玖" + tmpnewchar;
break;
}
switch (part[0].length - i - 1) {
case 0:
tmpnewchar = tmpnewchar + "元";
break;
case 1:
if (perchar != 0) tmpnewchar = tmpnewchar + "拾";
break;
case 2:
if (perchar != 0) tmpnewchar = tmpnewchar + "佰";
break;
case 3:
if (perchar != 0) tmpnewchar = tmpnewchar + "仟";
break;
case 4:
tmpnewchar = tmpnewchar + "万";
break;
case 5:
if (perchar != 0) tmpnewchar = tmpnewchar + "拾";
break;
case 6:
if (perchar != 0) tmpnewchar = tmpnewchar + "佰";
break;
case 7:
if (perchar != 0) tmpnewchar = tmpnewchar + "仟";
break;
case 8:
tmpnewchar = tmpnewchar + "亿";
break;
case 9:
tmpnewchar = tmpnewchar + "拾";
break;
}
var newchar = tmpnewchar + newchar;
}
//小数点之后进行转化
if (Num.indexOf(".") != -1) {
if (part[1].length > 2) {
// alert("小数点之后只能保留两位,系统将自动截断");
part[1] = part[1].substr(0, 2)
}
for (i = 0; i < part[1].length; i++) {
tmpnewchar = ""
perchar = part[1].charAt(i)
switch (perchar) {
case "0":
tmpnewchar = "零" + tmpnewchar;
break;
case "1":
tmpnewchar = "壹" + tmpnewchar;
break;
case "2":
tmpnewchar = "贰" + tmpnewchar;
break;
case "3":
tmpnewchar = "叁" + tmpnewchar;
break;
case "4":
tmpnewchar = "肆" + tmpnewchar;
break;
case "5":
tmpnewchar = "伍" + tmpnewchar;
break;
case "6":
tmpnewchar = "陆" + tmpnewchar;
break;
case "7":
tmpnewchar = "柒" + tmpnewchar;
break;
case "8":
tmpnewchar = "捌" + tmpnewchar;
break;
case "9":
tmpnewchar = "玖" + tmpnewchar;
break;
}
if (i == 0) tmpnewchar = tmpnewchar + "角";
if (i == 1) tmpnewchar = tmpnewchar + "分";
newchar = newchar + tmpnewchar;
}
}
//替换所有无用汉字
while (newchar.search("零零") != -1)
newchar = newchar.replace("零零", "零");
newchar = newchar.replace("零亿", "亿");
newchar = newchar.replace("亿万", "亿");
newchar = newchar.replace("零万", "万");
newchar = newchar.replace("零元", "元");
newchar = newchar.replace("零角", "");
newchar = newchar.replace("零分", "");
if (newchar.charAt(newchar.length - 1) == "元") {
newchar = newchar + "整"
}
return newchar;
}
```

42.判断一个元素是否在数组中

```javascript
export const contains = (arr, val) => {
return arr.indexOf(val) != -1 ? true : false;
}
```

43.数组排序，{type} 1：从小到大 2：从大到小 3：随机

```javascript
export const sort = (arr, type = 1) => {
return arr.sort((a, b) => {
switch (type) {
case 1:
return a - b;
case 2:
return b - a;
case 3:
return Math.random() - 0.5;
default:
return arr;
}
})
}
```

44.去重

```javascript
export const unique = (arr) => {
if (Array.hasOwnProperty('from')) {
return Array.from(new Set(arr));
} else {
var n = {}, r = [];
for (var i = 0; i < arr.length; i++) {
if (!n[arr[i]]) {
n[arr[i]] = true;
r.push(arr[i]);
}
}
return r;
}
}
```

45.求两个集合的并集

```javascript
export const union = (a, b) => {
var newArr = a.concat(b);
return this.unique(newArr);
}
`
46.求两个集合的交集

export const intersect = (a, b) => {
var _this = this;
a = this.unique(a);
return this.map(a, function (o) {
return _this.contains(b, o) ? o : null;
});
}
```

47.删除其中一个元素

```javascript
export const remove = (arr, ele) => {
var index = arr.indexOf(ele);
if (index > -1) {
arr.splice(index, 1);
}
return arr;
}
```

48.将类数组转换为数组

```javascript
export const formArray = (ary) => {
var arr = [];
if (Array.isArray(ary)) {
arr = ary;
} else {
arr = Array.prototype.slice.call(ary);
};
return arr;
}
```

49.最大值

```javascript
export const max = (arr) => {
return Math.max.apply(null, arr);
}
```

50.最小值

```javascript
export const min = (arr) => {
return Math.min.apply(null, arr);
}
```

51.求和

```javascript
export const sum = (arr) => {
return arr.reduce((pre, cur) => {
return pre + cur
})
}
```

52.平均值

```javascript
export const average = (arr) => {
return this.sum(arr) / arr.length
}
```

53.去除空格,type: 1-所有空格 2-前后空格 3-前空格 4-后空格

```javascript
export const trim = (str, type) => {
type = type || 1
switch (type) {
case 1:
return str.replace(/\s+/g, "");
case 2:
return str.replace(/(^\s*)|(\s*$)/g, "");
case 3:
return str.replace(/(^\s*)/g, "");
case 4:
return str.replace(/(\s*$)/g, "");
default:
return str;
}
}
```

54.字符转换，type: 1:首字母大写 2：首字母小写 3：大小写转换 4：全部大写 5：全部小写

```javascript
export const changeCase = (str, type) => {
type = type || 4
switch (type) {
case 1:
return str.replace(/\b\w+\b/g, function (word) {
return word.substring(0, 1).toUpperCase() + word.substring(1).toLowerCase();

});
case 2:
return str.replace(/\b\w+\b/g, function (word) {
return word.substring(0, 1).toLowerCase() + word.substring(1).toUpperCase();
});
case 3:
return str.split('').map(function (word) {
if (/[a-z]/.test(word)) {
return word.toUpperCase();
} else {
return word.toLowerCase()
}
}).join('')
case 4:
return str.toUpperCase();
case 5:
return str.toLowerCase();
default:
return str;
}
}
```

55.检测密码强度

```javascript
export const checkPwd = (str) => {
var Lv = 0;
if (str.length < 6) {
return Lv
}
if (/[0-9]/.test(str)) {
Lv++
}
if (/[a-z]/.test(str)) {
Lv++
}
if (/[A-Z]/.test(str)) {
Lv++
}
if (/[\.|-|_]/.test(str)) {
Lv++
}
return Lv;
}
```

56.函数节流器

```javascript
export const debouncer = (fn, time, interval = 200) => {
if (time - (window.debounceTimestamp || 0) > interval) {
fn && fn();
window.debounceTimestamp = time;
}
}
```

57.在字符串中插入新字符串

```javascript
export const insertStr = (soure, index, newStr) => {
var str = soure.slice(0, index) + newStr + soure.slice(index);
return str;
}
```

58.判断两个对象是否键值相同

```javascript
export const isObjectEqual = (a, b) => {
var aProps = Object.getOwnPropertyNames(a);
var bProps = Object.getOwnPropertyNames(b);

if (aProps.length !== bProps.length) {
return false;
}

for (var i = 0; i < aProps.length; i++) {
var propName = aProps[i];

if (a[propName] !== b[propName]) {
return false;
}
}
return true;
}
```

59.16进制颜色转RGBRGBA字符串

```javascript
export const colorToRGB = (val, opa) => {

var pattern = /^(#?)[a-fA-F0-9]{6}$/; //16进制颜色值校验规则
var isOpa = typeof opa == 'number'; //判断是否有设置不透明度

if (!pattern.test(val)) { //如果值不符合规则返回空字符
return '';
}

var v = val.replace(/#/, ''); //如果有#号先去除#号
var rgbArr = [];
var rgbStr = '';

for (var i = 0; i < 3; i++) {
var item = v.substring(i * 2, i * 2 + 2);
var num = parseInt(item, 16);
rgbArr.push(num);
}

rgbStr = rgbArr.join();
rgbStr = 'rgb' + (isOpa ? 'a' : '') + '(' + rgbStr + (isOpa ? ',' + opa : '') + ')';
return rgbStr;
}
```

60.追加url参数
```javascript
export const appendQuery = (url, key, value) => {
var options = key;
if (typeof options == 'string') {
options = {};
options[key] = value;
}
options = $.param(options);
if (url.includes('?')) {
url += '&' + options
} else {
url += '?' + options
}
return url;
}
```

Last modification：July 24th, 2020 at 05:13 pm

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JavaScript里那些有趣的正则表达式

YH_evIs • 2020 年 07 月 14 日

> 生产环境慎用

1.邮箱

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

2.手机号码

```javascript
export const isMobile = (s) => {
return /^1[0-9]{10}$/.test(s)
}
```

3.电话号码

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

4.是否url地址

```javascript
export const isURL = (s) => {
return /^http[s]?:\/\/.*/.test(s)
}
```

5.是否字符串

```javascript
export const isString = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'String'
}
```

6.是否数字

```javascript
export const isNumber = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Number'
}
```

7.是否boolean

```javascript
export const isBoolean = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Boolean'
}
```

8.是否函数

```javascript
export const isFunction = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Function'
}
```

9.是否为null

```javascript
export const isNull = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Null'
}
```

10.是否undefined

```javascript
export const isUndefined = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Undefined'
}
```

11.是否对象

```javascript
export const isObj = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Object'
}
```

12.是否数组

```javascript
export const isArray = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Array'
}
```

13.是否时间

```javascript
export const isDate = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Date'
}
```

14.是否正则

```javascript
export const isRegExp = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'RegExp'
}
```

15.是否错误对象

```javascript
export const isError = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Error'
}
```

16.是否Symbol函数

```javascript
export const isSymbol = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Symbol'
}
```

17.是否Promise对象

```javascript
export const isPromise = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Promise'
}
```

18.是否Set对象

```javascript
export const isSet = (o) => {
return Object.prototype.toString.call(o).slice(8, -1) === 'Set'
}
export const ua = navigator.userAgent.toLowerCase();
```

19.是否是微信浏览器

```javascript
export const isWeiXin = () => {
return ua.match(/microMessenger/i) == 'micromessenger'
}
```

20.是否是移动端

```javascript
export const isDeviceMobile = () => {
return /android|webos|iphone|ipod|balckberry/i.test(ua)
}
```

21.是否是QQ浏览器

```javascript
export const isQQBrowser = () => {
return !!ua.match(/mqqbrowser|qzone|qqbrowser|qbwebviewtype/i)
}
```

22.是否是爬虫

23.是否ios

24.是否为PC端

25.去除html标签

```javascript
export const removeHtmltag = (str) => {
return str.replace(/<[^>]+>/g, '')
}
```

26.获取url参数

27.动态引入js

28.根据url地址下载

29.el是否包含某个class

```javascript
export const hasClass = (el, className) => {
let reg = new RegExp('(^|\\s)' + className + '(\\s|$)')
return reg.test(el.className)
}
```

30.el添加某个class

31.el去除某个class

32.获取滚动的坐标

33.滚动到顶部

34.el是否在视口范围内

35.洗牌算法随机

36.劫持粘贴板

37.判断类型集合

38.严格的身份证校验

return true
}
```

39.随机数范围

```javascript
export const random = (min, max) => {
if (arguments.length === 2) {
return Math.floor(min + Math.random() * ((max + 1) - min))
} else {
return null;
}
}
```

40.将阿拉伯数字翻译成中文的大写数字

41.将数字转换为大写金额

42.判断一个元素是否在数组中

```javascript
export const contains = (arr, val) => {
return arr.indexOf(val) != -1 ? true : false;
}
```

43.数组排序，{type} 1：从小到大 2：从大到小 3：随机

44.去重

45.求两个集合的并集

```javascript
export const union = (a, b) => {
var newArr = a.concat(b);
return this.unique(newArr);
}
`
46.求两个集合的交集

export const intersect = (a, b) => {
var _this = this;
a = this.unique(a);
return this.map(a, function (o) {
return _this.contains(b, o) ? o : null;
});
}
```

47.删除其中一个元素

```javascript
export const remove = (arr, ele) => {
var index = arr.indexOf(ele);
if (index > -1) {
arr.splice(index, 1);
}
return arr;
}
```

48.将类数组转换为数组

```javascript
export const formArray = (ary) => {
var arr = [];
if (Array.isArray(ary)) {
arr = ary;
} else {
arr = Array.prototype.slice.call(ary);
};
return arr;
}
```

49.最大值

```javascript
export const max = (arr) => {
return Math.max.apply(null, arr);
}
```

50.最小值

```javascript
export const min = (arr) => {
return Math.min.apply(null, arr);
}
```

51.求和

```javascript
export const sum = (arr) => {
return arr.reduce((pre, cur) => {
return pre + cur
})
}
```

52.平均值

```javascript
export const average = (arr) => {
return this.sum(arr) / arr.length
}
```

53.去除空格,type: 1-所有空格 2-前后空格 3-前空格 4-后空格

54.字符转换，type: 1:首字母大写 2：首字母小写 3：大小写转换 4：全部大写 5：全部小写

55.检测密码强度

56.函数节流器

```javascript
export const debouncer = (fn, time, interval = 200) => {
if (time - (window.debounceTimestamp || 0) > interval) {
fn && fn();
window.debounceTimestamp = time;
}
}
```

57.在字符串中插入新字符串

```javascript
export const insertStr = (soure, index, newStr) => {
var str = soure.slice(0, index) + newStr + soure.slice(index);
return str;
}
```

58.判断两个对象是否键值相同

```javascript
export const isObjectEqual = (a, b) => {
var aProps = Object.getOwnPropertyNames(a);
var bProps = Object.getOwnPropertyNames(b);

if (aProps.length !== bProps.length) {
return false;
}

for (var i = 0; i < aProps.length; i++) {
var propName = aProps[i];

if (a[propName] !== b[propName]) {
return false;
}
}
return true;
}
```

59.16进制颜色转RGBRGBA字符串

```javascript
export const colorToRGB = (val, opa) => {

var pattern = /^(#?)[a-fA-F0-9]{6}$/; //16进制颜色值校验规则
var isOpa = typeof opa == 'number'; //判断是否有设置不透明度

if (!pattern.test(val)) { //如果值不符合规则返回空字符
return '';
}

var v = val.replace(/#/, ''); //如果有#号先去除#号
var rgbArr = [];
var rgbStr = '';

for (var i = 0; i < 3; i++) {
var item = v.substring(i * 2, i * 2 + 2);
var num = parseInt(item, 16);
rgbArr.push(num);
}

rgbStr = rgbArr.join();
rgbStr = 'rgb' + (isOpa ? 'a' : '') + '(' + rgbStr + (isOpa ? ',' + opa : '') + ')';
return rgbStr;
}
```

JavaScript里那些有趣的正则表达式

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JavaScript里那些有趣的正则表达式