前端常用60余种工具方法

Posted 2020-12-24 onesea

前端常用60余种工具方法

 

1.邮箱

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

2.手机号码

1.  
   export const isMobile = (s) => {
2.  
   return /^1[0-9]{10}$/.test(s)
3.  
   }

3.电话号码

1.  
   export const isPhone = (s) => {
2.  
   return /^([0-9]{3,4}-)?[0-9]{7,8}$/.test(s)
3.  
   }

4.是否url地址

1.  
   export const isURL = (s) => {
2.  
   return /^http[s]?://.*/.test(s)
3.  
   }

5.是否字符串

1.  
   export const isString = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘String‘
3.  
   }

6.是否数字

1.  
   export const isNumber = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Number‘
3.  
   }

7.是否boolean

1.  
   export const isBoolean = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Boolean‘
3.  
   }

8.是否函数

1.  
   export const isFunction = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Function‘
3.  
   }

9.是否为null

1.  
   export const isNull = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Null‘
3.  
   }

10.是否undefined

1.  
   export const isUndefined = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Undefined‘
3.  
   }

11.是否对象

1.  
   export const isObj = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Object‘
3.  
   }

12.是否数组

1.  
   export const isArray = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Array‘
3.  
   }

13.是否时间

1.  
   export const isDate = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Date‘
3.  
   }

14.是否正则

1.  
   export const isRegExp = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘RegExp‘
3.  
   }

15.是否错误对象

1.  
   export const isError = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Error‘
3.  
   }

16.是否Symbol函数

1.  
   export const isSymbol = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Symbol‘
3.  
   }

17.是否Promise对象

1.  
   export const isPromise = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Promise‘
3.  
   }

18.是否Set对象

1.  
   export const isSet = (o) => {
2.  
   return Object.prototype.toString.call(o).slice(8, -1) === ‘Set‘
3.  
   }

export const ua = navigator.userAgent.toLowerCase();

19.是否是微信浏览器

1.  
   export const isWeiXin = () => {
2.  
   return ua.match(/microMessenger/i) == ‘micromessenger‘
3.  
   }

20.是否是移动端

1.  
   export const isDeviceMobile = () => {
2.  
   return /android|webos|iphone|ipod|balckberry/i.test(ua)
3.  
   }

21.是否是QQ浏览器

1.  
   export const isQQBrowser = () => {
2.  
   return !!ua.match(/mqqbrowser|qzone|qqbrowser|qbwebviewtype/i)
3.  
   }

22.是否是爬虫

1.  
   export const isSpider = () => {
2.  
   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)
3.  
   }

23.是否ios

1.  
   export const isIos = () => {
2.  
   var u = navigator.userAgent;
3.  
   if (u.indexOf(‘Android‘) > -1 || u.indexOf(‘Linux‘) > -1) { //安卓手机
4.  
   return false
5.  
   } else if (u.indexOf(‘iPhone‘) > -1) {//苹果手机
6.  
   return true
7.  
   } else if (u.indexOf(‘iPad‘) > -1) {//iPad
8.  
   return false
9.  
   } else if (u.indexOf(‘Windows Phone‘) > -1) {//winphone手机
10.  
    return false
11.  
    } else {
12.  
    return false
13.  
    }
14.  
    }

24.是否为PC端

1.  
   export const isPC = () => {
2.  
   var userAgentInfo = navigator.userAgent;
3.  
   var Agents = ["Android", "iPhone",
4.  
   "SymbianOS", "Windows Phone",
5.  
   "iPad", "iPod"];
6.  
   var flag = true;
7.  
   for (var v = 0; v < Agents.length; v++) {
8.  
   if (userAgentInfo.indexOf(Agents[v]) > 0) {
9.  
   flag = false;
10.  
    break;
11.  
    }
12.  
    }
13.  
    return flag;
14.  
    }

25.去除html标签

1.  
   export const removeHtmltag = (str) => {
2.  
   return str.replace(/<[^>]+>/g, ‘‘)
3.  
   }

26.获取url参数

1.  
   export const getQueryString = (name) => {
2.  
   const reg = new RegExp(‘(^|&)‘ + name + ‘=([^&]*)(&|$)‘, ‘i‘);
3.  
   const search = window.location.search.split(‘?‘)[1] || ‘‘;
4.  
   const r = search.match(reg) || [];
5.  
   return r[2];
6.  
   }

27.动态引入js

1.  
   export const injectScript = (src) => {
2.  
   const s = document.createElement(‘script‘);
3.  
   s.type = ‘text/javascript‘;
4.  
   s.async = true;
5.  
   s.src = src;
6.  
   const t = document.getElementsByTagName(‘script‘)[0];
7.  
   t.parentNode.insertBefore(s, t);
8.  
   }

28.根据url地址下载

1.  
   export const download = (url) => {
2.  
   var isChrome = navigator.userAgent.toLowerCase().indexOf(‘chrome‘) > -1;
3.  
   var isSafari = navigator.userAgent.toLowerCase().indexOf(‘safari‘) > -1;
4.  
   if (isChrome || isSafari) {
5.  
   var link = document.createElement(‘a‘);
6.  
   link.href = url;
7.  
   if (link.download !== undefined) {
8.  
   var fileName = url.substring(url.lastIndexOf(‘/‘) + 1, url.length);
9.  
   link.download = fileName;
10.  
    }
11.  
    if (document.createEvent) {
12.  
    var e = document.createEvent(‘MouseEvents‘);
13.  
    e.initEvent(‘click‘, true, true);
14.  
    link.dispatchEvent(e);
15.  
    return true;
16.  
    }
17.  
    }
18.  
    if (url.indexOf(‘?‘) === -1) {
19.  
    url += ‘?download‘;
20.  
    }
21.  
    window.open(url, ‘_self‘);
22.  
    return true;
23.  
    }

29.el是否包含某个class

1.  
   export const hasClass = (el, className) => {
2.  
   let reg = new RegExp(‘(^|\s)‘ + className + ‘(\s|$)‘)
3.  
   return reg.test(el.className)
4.  
   }

30.el添加某个class

1.  
   export const addClass = (el, className) => {
2.  
   if (hasClass(el, className)) {
3.  
   return
4.  
   }
5.  
   let newClass = el.className.split(‘ ‘)
6.  
   newClass.push(className)
7.  
   el.className = newClass.join(‘ ‘)
8.  
   }

31.el去除某个class

1.  
   export const removeClass = (el, className) => {
2.  
   if (!hasClass(el, className)) {
3.  
   return
4.  
   }
5.  
   let reg = new RegExp(‘(^|\s)‘ + className + ‘(\s|$)‘, ‘g‘)
6.  
   el.className = el.className.replace(reg, ‘ ‘)
7.  
   }

32.获取滚动的坐标

1.  
   export const getScrollPosition = (el = window) => ({
2.  
   x: el.pageXOffset !== undefined ? el.pageXOffset : el.scrollLeft,
3.  
   y: el.pageYOffset !== undefined ? el.pageYOffset : el.scrollTop
4.  
   });

33.滚动到顶部

1.  
   export const scrollToTop = () => {
2.  
   const c = document.documentElement.scrollTop || document.body.scrollTop;
3.  
   if (c > 0) {
4.  
   window.requestAnimationFrame(scrollToTop);
5.  
   window.scrollTo(0, c - c / 8);
6.  
   }
7.  
   }

34.el是否在视口范围内

1.  
   export const elementIsVisibleInViewport = (el, partiallyVisible = false) => {
2.  
   const { top, left, bottom, right } = el.getBoundingClientRect();
3.  
   const { innerHeight, innerWidth } = window;
4.  
   return partiallyVisible
5.  
   ? ((top > 0 && top < innerHeight) || (bottom > 0 && bottom < innerHeight)) &&
6.  
   ((left > 0 && left < innerWidth) || (right > 0 && right < innerWidth))
7.  
   : top >= 0 && left >= 0 && bottom <= innerHeight && right <= innerWidth;
8.  
   }

35.洗牌算法随机

1.  
   export const shuffle = (arr) => {
2.  
   var result = [],
3.  
   random;
4.  
   while (arr.length > 0) {
5.  
   random = Math.floor(Math.random() * arr.length);
6.  
   result.push(arr[random])
7.  
   arr.splice(random, 1)
8.  
   }
9.  
   return result;
10.  
    }

36.拦截粘贴板

1.  
   export const copyTextToClipboard = (value) => {
2.  
   var textArea = document.createElement("textarea");
3.  
   textArea.style.background = ‘transparent‘;
4.  
   textArea.value = value;
5.  
   document.body.appendChild(textArea);
6.  
   textArea.select();
7.  
   try {
8.  
   var successful = document.execCommand(‘copy‘);
9.  
   } catch (err) {
10.  
    console.log(‘Oops, unable to copy‘);
11.  
    }
12.  
    document.body.removeChild(textArea);
13.  
    }

37.判断类型集合

1.  
   export const checkStr = (str, type) => {
2.  
   switch (type) {
3.  
   case ‘phone‘: //手机号码
4.  
   return /^1[3|4|5|6|7|8|9][0-9]{9}$/.test(str);
5.  
   case ‘tel‘: //座机
6.  
   return /^(0d{2,3}-d{7,8})(-d{1,4})?$/.test(str);
7.  
   case ‘card‘: //身份证
8.  
   return /(^d{15}$)|(^d{18}$)|(^d{17}(d|X|x)$)/.test(str);
9.  
   case ‘pwd‘: //密码以字母开头，长度在6~18之间，只能包含字母、数字和下划线
10.  
    return /^[a-zA-Z]w{5,17}$/.test(str)
11.  
    case ‘postal‘: //邮政编码
12.  
    return /[1-9]d{5}(?!d)/.test(str);
13.  
    case ‘QQ‘: //QQ号
14.  
    return /^[1-9][0-9]{4,9}$/.test(str);
15.  
    case ‘email‘: //邮箱
16.  
    return /^[w-]+(.[w-]+)*@[w-]+(.[w-]+)+$/.test(str);
17.  
    case ‘money‘: //金额(小数点2位)
18.  
    return /^d*(?:.d{0,2})?$/.test(str);
19.  
    case ‘URL‘: //网址
20.  
    return /(http|ftp|https)://[w-_]+(.[w-_]+)+([w-.,@?^=%&:/~+#]*[w-@?^=%&/~+#])?/.test(str)
21.  
    case ‘IP‘: //IP
22.  
    return /((?:(?:25[0-5]|2[0-4]\d|[01]?\d?\d)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d?\d))/.test(str);
23.  
    case ‘date‘: //日期时间
24.  
    return /^(d{4})-(d{2})-(d{2}) (d{2})(?::d{2}|:(d{2}):(d{2}))$/.test(str) || /^(d{4})-(d{2})-(d{2})$/.test(str)
25.  
    case ‘number‘: //数字
26.  
    return /^[0-9]$/.test(str);
27.  
    case ‘english‘: //英文
28.  
    return /^[a-zA-Z]+$/.test(str);
29.  
    case ‘chinese‘: //中文
30.  
    return /^[\u4E00-\u9FA5]+$/.test(str);
31.  
    case ‘lower‘: //小写
32.  
    return /^[a-z]+$/.test(str);
33.  
    case ‘upper‘: //大写
34.  
    return /^[A-Z]+$/.test(str);
35.  
    case ‘HTML‘: //HTML标记
36.  
    return /<("[^"]*"|‘[^‘]*‘|[^‘">])*>/.test(str);
37.  
    default:
38.  
    return true;
39.  
    }
40.  
    }

38.严格的身份证校验

1.  
   export const isCardID = (sId) => {
2.  
   if (!/(^d{15}$)|(^d{17}(d|X|x)$)/.test(sId)) {
3.  
   console.log(‘你输入的身份证长度或格式错误‘)
4.  
   return false
5.  
   }
6.  
   //身份证城市
7.  
   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" };
8.  
   if (!aCity[parseInt(sId.substr(0, 2))]) {
9.  
   console.log(‘你的身份证地区非法‘)
10.  
    return false
11.  
    }
12.  
     
13.  
    // 出生日期验证
14.  
    var sBirthday = (sId.substr(6, 4) + "-" + Number(sId.substr(10, 2)) + "-" + Number(sId.substr(12, 2))).replace(/-/g, "/"),
15.  
    d = new Date(sBirthday)
16.  
    if (sBirthday != (d.getFullYear() + "/" + (d.getMonth() + 1) + "/" + d.getDate())) {
17.  
    console.log(‘身份证上的出生日期非法‘)
18.  
    return false
19.  
    }
20.  
     
21.  
    // 身份证号码校验
22.  
    var sum = 0,
23.  
    weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2],
24.  
    codes = "10X98765432"
25.  
    for (var i = 0; i < sId.length - 1; i++) {
26.  
    sum += sId[i] * weights[i];
27.  
    }
28.  
    var last = codes[sum % 11]; //计算出来的最后一位身份证号码
29.  
    if (sId[sId.length - 1] != last) {
30.  
    console.log(‘你输入的身份证号非法‘)
31.  
    return false
32.  
    }
33.  
     
34.  
    return true
35.  
    }

39.随机数范围

1.  
   export const random = (min, max) => {
2.  
   if (arguments.length === 2) {
3.  
   return Math.floor(min + Math.random() * ((max + 1) - min))
4.  
   } else {
5.  
   return null;
6.  
   }
7.  
   }

40.将阿拉伯数字翻译成中文的大写数字

1.  
   export const numberToChinese = (num) => {
2.  
   var AA = new Array("零", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十");
3.  
   var BB = new Array("", "十", "百", "仟", "萬", "億", "点", "");
4.  
   var a = ("" + num).replace(/(^0*)/g, "").split("."),
5.  
   k = 0,
6.  
   re = "";
7.  
   for (var i = a[0].length - 1; i >= 0; i--) {
8.  
   switch (k) {
9.  
   case 0:
10.  
    re = BB[7] + re;
11.  
    break;
12.  
    case 4:
13.  
    if (!new RegExp("0{4}//d{" + (a[0].length - i - 1) + "}$")
14.  
    .test(a[0]))
15.  
    re = BB[4] + re;
16.  
    break;
17.  
    case 8:
18.  
    re = BB[5] + re;
19.  
    BB[7] = BB[5];
20.  
    k = 0;
21.  
    break;
22.  
    }
23.  
    if (k % 4 == 2 && a[0].charAt(i + 2) != 0 && a[0].charAt(i + 1) == 0)
24.  
    re = AA[0] + re;
25.  
    if (a[0].charAt(i) != 0)
26.  
    re = AA[a[0].charAt(i)] + BB[k % 4] + re;
27.  
    k++;
28.  
    }
29.  
     
30.  
    if (a.length > 1) // 加上小数部分(如果有小数部分)
31.  
    {
32.  
    re += BB[6];
33.  
    for (var i = 0; i < a[1].length; i++)
34.  
    re += AA[a[1].charAt(i)];
35.  
    }
36.  
    if (re == ‘一十‘)
37.  
    re = "十";
38.  
    if (re.match(/^一/) && re.length == 3)
39.  
    re = re.replace("一", "");
40.  
    return re;
41.  
    }

41.将数字转换为大写金额

1.  
   export const changeToChinese = (Num) => {
2.  
   //判断如果传递进来的不是字符的话转换为字符
3.  
   if (typeof Num == "number") {
4.  
   Num = new String(Num);
5.  
   };
6.  
   Num = Num.replace(/,/g, "") //替换tomoney()中的“,”
7.  
   Num = Num.replace(/ /g, "") //替换tomoney()中的空格
8.  
   Num = Num.replace(/￥/g, "") //替换掉可能出现的￥字符
9.  
   if (isNaN(Num)) { //验证输入的字符是否为数字
10.  
    //alert("请检查小写金额是否正确");
11.  
    return "";
12.  
    };
13.  
    //字符处理完毕后开始转换，采用前后两部分分别转换
14.  
    var part = String(Num).split(".");
15.  
    var newchar = "";
16.  
    //小数点前进行转化
17.  
    for (var i = part[0].length - 1; i >= 0; i--) {
18.  
    if (part[0].length > 10) {
19.  
    return "";
20.  
    //若数量超过拾亿单位，提示
21.  
    }
22.  
    var tmpnewchar = ""
23.  
    var perchar = part[0].charAt(i);
24.  
    switch (perchar) {
25.  
    case "0":
26.  
    tmpnewchar = "零" + tmpnewchar;
27.  
    break;
28.  
    case "1":
29.  
    tmpnewchar = "壹" + tmpnewchar;
30.  
    break;
31.  
    case "2":
32.  
    tmpnewchar = "贰" + tmpnewchar;
33.  
    break;
34.  
    case "3":
35.  
    tmpnewchar = "叁" + tmpnewchar;
36.  
    break;
37.  
    case "4":
38.  
    tmpnewchar = "肆" + tmpnewchar;
39.  
    break;
40.  
    case "5":
41.  
    tmpnewchar = "伍" + tmpnewchar;
42.  
    break;
43.  
    case "6":
44.  
    tmpnewchar = "陆" + tmpnewchar;
45.  
    break;
46.  
    case "7":
47.  
    tmpnewchar = "柒" + tmpnewchar;
48.  
    break;
49.  
    case "8":
50.  
    tmpnewchar = "捌" + tmpnewchar;
51.  
    break;
52.  
    case "9":
53.  
    tmpnewchar = "玖" + tmpnewchar;
54.  
    break;
55.  
    }
56.  
    switch (part[0].length - i - 1) {
57.  
    case 0:
58.  
    tmpnewchar = tmpnewchar + "元";
59.  
    break;
60.  
    case 1:
61.  
    if (perchar != 0) tmpnewchar = tmpnewchar + "拾";
62.  
    break;
63.  
    case 2:
64.  
    if (perchar != 0) tmpnewchar = tmpnewchar + "佰";
65.  
    break;
66.  
    case 3:
67.  
    if (perchar != 0) tmpnewchar = tmpnewchar + "仟";
68.  
    break;
69.  
    case 4:
70.  
    tmpnewchar = tmpnewchar + "万";
71.  
    break;
72.  
    case 5:
73.  
    if (perchar != 0) tmpnewchar = tmpnewchar + "拾";
74.  
    break;
75.  
    case 6:
76.  
    if (perchar != 0) tmpnewchar = tmpnewchar + "佰";
77.  
    break;
78.  
    case 7:
79.  
    if (perchar != 0) tmpnewchar = tmpnewchar + "仟";
80.  
    break;
81.  
    case 8:
82.  
    tmpnewchar = tmpnewchar + "亿";
83.  
    break;
84.  
    case 9:
85.  
    tmpnewchar = tmpnewchar + "拾";
86.  
    break;
87.  
    }
88.  
    var newchar = tmpnewchar + newchar;
89.  
    }
90.  
    //小数点之后进行转化
91.  
    if (Num.indexOf(".") != -1) {
92.  
    if (part[1].length > 2) {
93.  
    // alert("小数点之后只能保留两位,系统将自动截断");
94.  
    part[1] = part[1].substr(0, 2)
95.  
    }
96.  
    for (i = 0; i < part[1].length; i++) {
97.  
    tmpnewchar = ""
98.  
    perchar = part[1].charAt(i)
99.  
    switch (perchar) {
100.  
     case "0":
101.  
     tmpnewchar = "零" + tmpnewchar;
102.  
     break;
103.  
     case "1":
104.  
     tmpnewchar = "壹" + tmpnewchar;
105.  
     break;
106.  
     case "2":
107.  
     tmpnewchar = "贰" + tmpnewchar;
108.  
     break;
109.  
     case "3":
110.  
     tmpnewchar = "叁" + tmpnewchar;
111.  
     break;
112.  
     case "4":
113.  
     tmpnewchar = "肆" + tmpnewchar;
114.  
     break;
115.  
     case "5":
116.  
     tmpnewchar = "伍" + tmpnewchar;
117.  
     break;
118.  
     case "6":
119.  
     tmpnewchar = "陆" + tmpnewchar;
120.  
     break;
121.  
     case "7":
122.  
     tmpnewchar = "柒" + tmpnewchar;
123.  
     break;
124.  
     case "8":
125.  
     tmpnewchar = "捌" + tmpnewchar;
126.  
     break;
127.  
     case "9":
128.  
     tmpnewchar = "玖" + tmpnewchar;
129.  
     break;
130.  
     }
131.  
     if (i == 0) tmpnewchar = tmpnewchar + "角";
132.  
     if (i == 1) tmpnewchar = tmpnewchar + "分";
133.  
     newchar = newchar + tmpnewchar;
134.  
     }
135.  
     }
136.  
     //替换所有无用汉字
137.  
     while (newchar.search("零零") != -1)
138.  
     newchar = newchar.replace("零零", "零");
139.  
     newchar = newchar.replace("零亿", "亿");
140.  
     newchar = newchar.replace("亿万", "亿");
141.  
     newchar = newchar.replace("零万", "万");
142.  
     newchar = newchar.replace("零元", "元");
143.  
     newchar = newchar.replace("零角", "");
144.  
     newchar = newchar.replace("零分", "");
145.  
     if (newchar.charAt(newchar.length - 1) == "元") {
146.  
     newchar = newchar + "整"
147.  
     }
148.  
     return newchar;
149.  
     }

42.判断一个元素是否在数组中

1.  
   export const contains = (arr, val) => {
2.  
   return arr.indexOf(val) != -1 ? true : false;
3.  
   }

43.数组排序，{type} 1：从小到大 2：从大到小 3：随机

1.  
   export const sort = (arr, type = 1) => {
2.  
   return arr.sort((a, b) => {
3.  
   switch (type) {
4.  
   case 1:
5.  
   return a - b;
6.  
   case 2:
7.  
   return b - a;
8.  
   case 3:
9.  
   return Math.random() - 0.5;
10.  
    default:
11.  
    return arr;
12.  
    }
13.  
    })
14.  
    }

44.去重

1.  
   export const unique = (arr) => {
2.  
   if (Array.hasOwnProperty(‘from‘)) {
3.  
   return Array.from(new Set(arr));
4.  
   } else {
5.  
   var n = {}, r = [];
6.  
   for (var i = 0; i < arr.length; i++) {
7.  
   if (!n[arr[i]]) {
8.  
   n[arr[i]] = true;
9.  
   r.push(arr[i]);
10.  
    }
11.  
    }
12.  
    return r;
13.  
    }
14.  
    }

45.求两个集合的并集

1.  
   export const union = (a, b) => {
2.  
   var newArr = a.concat(b);
3.  
   return this.unique(newArr);
4.  
   }

46.求两个集合的交集

1.  
   export const intersect = (a, b) => {
2.  
   var _this = this;
3.  
   a = this.unique(a);
4.  
   return this.map(a, function (o) {
5.  
   return _this.contains(b, o) ? o : null;
6.  
   });
7.  
   }

47.删除其中一个元素

1.  
   export const remove = (arr, ele) => {
2.  
   var index = arr.indexOf(ele);
3.  
   if (index > -1) {
4.  
   arr.splice(index, 1);
5.  
   }
6.  
   return arr;
7.  
   }

48.将类数组转换为数组

1.  
   export const formArray = (ary) => {
2.  
   var arr = [];
3.  
   if (Array.isArray(ary)) {
4.  
   arr = ary;
5.  
   } else {
6.  
   arr = Array.prototype.slice.call(ary);
7.  
   };
8.  
   return arr;
9.  
   }

49.最大值

1.  
   export const max = (arr) => {
2.  
   return Math.max.apply(null, arr);
3.  
   }

50.最小值

1.  
   export const min = (arr) => {
2.  
   return Math.min.apply(null, arr);
3.  
   }

51.求和

1.  
   export const sum = (arr) => {
2.  
   return arr.reduce((pre, cur) => {
3.  
   return pre + cur
4.  
   })
5.  
   }

52.平均值

1.  
   export const average = (arr) => {
2.  
   return this.sum(arr) / arr.length
3.  
   }

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

1.  
   export const trim = (str, type) => {
2.  
   type = type || 1
3.  
   switch (type) {
4.  
   case 1:
5.  
   return str.replace(/s+/g, "");
6.  
   case 2:
7.  
   return str.replace(/(^s*)|(s*$)/g, "");
8.  
   case 3:
9.  
   return str.replace(/(^s*)/g, "");
10.  
    case 4:
11.  
    return str.replace(/(s*$)/g, "");
12.  
    default:
13.  
    return str;
14.  
    }
15.  
    }

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

1.  
   export const changeCase = (str, type) => {
2.  
   type = type || 4
3.  
   switch (type) {
4.  
   case 1:
5.  
   return str.replace(/w+/g, function (word) {
6.  
   return word.substring(0, 1).toUpperCase() + word.substring(1).toLowerCase();
7.  
    
8.  
   });
9.  
   case 2:
10.  
    return str.replace(/w+/g, function (word) {
11.  
    return word.substring(0, 1).toLowerCase() + word.substring(1).toUpperCase();
12.  
    });
13.  
    case 3:
14.  
    return str.split(‘‘).map(function (word) {
15.  
    if (/[a-z]/.test(word)) {
16.  
    return word.toUpperCase();
17.  
    } else {
18.  
    return word.toLowerCase()
19.  
    }
20.  
    }).join(‘‘)
21.  
    case 4:
22.  
    return str.toUpperCase();
23.  
    case 5:
24.  
    return str.toLowerCase();
25.  
    default:
26.  
    return str;
27.  
    }
28.  
    }

55.检测密码强度

1.  
   export const checkPwd = (str) => {
2.  
   var Lv = 0;
3.  
   if (str.length < 6) {
4.  
   return Lv
5.  
   }
6.  
   if (/[0-9]/.test(str)) {
7.  
   Lv++
8.  
   }
9.  
   if (/[a-z]/.test(str)) {
10.  
    Lv++
11.  
    }
12.  
    if (/[A-Z]/.test(str)) {
13.  
    Lv++
14.  
    }
15.  
    if (/[.|-|_]/.test(str)) {
16.  
    Lv++
17.  
    }
18.  
    return Lv;
19.  
    }

56.函数节流器

1.  
   export const debouncer = (fn, time, interval = 200) => {
2.  
   if (time - (window.debounceTimestamp || 0) > interval) {
3.  
   fn && fn();
4.  
   window.debounceTimestamp = time;
5.  
   }
6.  
   }

57.在字符串中插入新字符串

1.  
   export const insertStr = (soure, index, newStr) => {
2.  
   var str = soure.slice(0, index) + newStr + soure.slice(index);
3.  
   return str;
4.  
   }

58.判断两个对象是否键值相同

1.  
   export const isObjectEqual = (a, b) => {
2.  
   var aProps = Object.getOwnPropertyNames(a);
3.  
   var bProps = Object.getOwnPropertyNames(b);
4.  
    
5.  
   if (aProps.length !== bProps.length) {
6.  
   return false;
7.  
   }
8.  
    
9.  
   for (var i = 0; i < aProps.length; i++) {
10.  
    var propName = aProps[i];
11.  
     
12.  
    if (a[propName] !== b[propName]) {
13.  
    return false;
14.  
    }
15.  
    }
16.  
    return true;
17.  
    }

59.16进制颜色转RGBRGBA字符串

1.  
   export const colorToRGB = (val, opa) => {
2.  
    
3.  
   var pattern = /^(#?)[a-fA-F0-9]{6}$/; //16进制颜色值校验规则
4.  
   var isOpa = typeof opa == ‘number‘; //判断是否有设置不透明度
5.  
    
6.  
   if (!pattern.test(val)) { //如果值不符合规则返回空字符
7.  
   return ‘‘;
8.  
   }
9.  
    
10.  
    var v = val.replace(/#/, ‘‘); //如果有#号先去除#号
11.  
    var rgbArr = [];
12.  
    var rgbStr = ‘‘;
13.  
     
14.  
    for (var i = 0; i < 3; i++) {
15.  
    var item = v.substring(i * 2, i * 2 + 2);
16.  
    var num = parseInt(item, 16);
17.  
    rgbArr.push(num);
18.  
    }
19.  
     
20.  
    rgbStr = rgbArr.join();
21.  
    rgbStr = ‘rgb‘ + (isOpa ? ‘a‘ : ‘‘) + ‘(‘ + rgbStr + (isOpa ? ‘,‘ + opa : ‘‘) + ‘)‘;
22.  
    return rgbStr;
23.  
    }

60.追加url参数

1.  
   export const appendQuery = (url, key, value) => {
2.  
   var options = key;
3.  
   if (typeof options == ‘string‘) {
4.  
   options = {};
5.  
   options[key] = value;
6.  
   }
7.  
   options = $.param(options);
8.  
   if (url.includes(‘?‘)) {
9.  
   url += ‘&‘ + options
10.  
    } else {
11.  
    url += ‘?‘ + options
12.  
    }
13.  
    return url;
14.  
    }