前端JS常用工具方法

// var ua = window.navigator.userAgent.toLowerCase();
/*** 前端JS常用工具方法* @class Tools*/
export default class Tools {/*** 1.是否邮箱* @method isEmail* @static Tools* @param {String} s 需判断的邮件地址* @returns {Boolean}*/static isEmail (s) {return /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((.[a-zA-Z0-9_-]{2,3}){1,2})$/.test(s)}/*** 2.手机号码* @method isMobile* @static Tools* @param {String} s * @returns {Boolean}*/static isMobile (s) {return /^1[0-9]{10}$/.test(s)}//3.电话号码static isPhone = (s) => {return /^([0-9]{3,4}-)?[0-9]{7,8}$/.test(s)}//4.是否url地址static isURL = (s) => {return /^http[s]?:\/\/.*/.test(s)}//5.是否字符串static isString (o) {return Object.prototype.toString.call(o).slice(8, -1) === 'String'}//6.是否数字static isNumber (o) {return Object.prototype.toString.call(o).slice(8, -1) === 'Number'}//7.是否booleanstatic isBoolean (o) {return Object.prototype.toString.call(o).slice(8, -1) === 'Boolean'}//8.是否函数static isFunction = (o) => {return Object.prototype.toString.call(o).slice(8, -1) === 'Function'}//9.是否为nullstatic isNull = (o) => {return Object.prototype.toString.call(o).slice(8, -1) === 'Null'}//10.是否undefinedstatic isUndefined = (o) => {return Object.prototype.toString.call(o).slice(8, -1) === 'Undefined'}//11.是否对象static isObj = (o) => {return Object.prototype.toString.call(o).slice(8, -1) === 'Object'}//12.是否数组static isArray = (o) => {return Object.prototype.toString.call(o).slice(8, -1) === 'Array'}//13.是否时间static isDate = (o) => {return Object.prototype.toString.call(o).slice(8, -1) === 'Date'}//14.是否正则static isRegExp = (o) => {return Object.prototype.toString.call(o).slice(8, -1) === 'RegExp'}//15.是否错误对象static isError = (o) => {return Object.prototype.toString.call(o).slice(8, -1) === 'Error'}//16.是否Symbol函数static isSymbol = (o) => {return Object.prototype.toString.call(o).slice(8, -1) === 'Symbol'}//17.是否Promise对象static isPromise = (o) => {return Object.prototype.toString.call(o).slice(8, -1) === 'Promise'}//是否Set对象static isSet = (o) => {return Object.prototype.toString.call(o).slice(8, -1) === 'Set'}//19.是否是微信浏览器static isWeiXin () {return ua.match(/microMessenger/i) == 'micromessenger'}//20.是否是移动端static isDeviceMobile = () => {return /android|webos|iphone|ipod|balckberry/i.test(ua)}//21.是否是QQ浏览器static isQQBrowser = () => {return !!ua.match(/mqqbrowser|qzone|qqbrowser|qbwebviewtype/i)}//22.是否是爬虫static 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iosstatic 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) {//iPadreturn false} else if (u.indexOf('Windows Phone') > -1) {//winphone手机return false} else {return false}}//24.是否为PC端static 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static removeHtmltag = (str) => {return str.replace(/<[^>]+>/g, '')}//26.获取url参数static 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jsstatic 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static download = (url) => {var isChrome = ua.indexOf('chrome') > -1;var isSafari = ua.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classstatic hasClass = (el, className) => {let reg = new RegExp('(^|\\s)' + className + '(\\s|$)')return reg.test(el.className)}//30.el添加某个classstatic addClass (el, className) {if (hasClass(el, className)) {return}let newClass = el.className.split(' ')newClass.push(className)el.className = newClass.join(' ')}//31.el去除某个classstatic removeClass (el, className) {if (!hasClass(el, className)) {return}let reg = new RegExp('(^|\\s)' + className + '(\\s|$)', 'g')el.className = el.className.replace(reg, ' ')}//32.获取滚动的坐标static getScrollPosition (el = window) {return {x: el.pageXOffset !== undefined ? el.pageXOffset : el.scrollLeft,y: el.pageYOffset !== undefined ? el.pageYOffset : el.scrollTop}}//33.滚动到顶部static 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static 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static 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static 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static 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})?$/.test(str);case 'URL':     //网址return /(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?/.test(str)case 'IP':      //IPreturn /((?:(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d))/.test(str);case 'date':    //日期时间return /^(\d{4})\-(\d{2})\-(\d{2}) (\d{2})(?:\:\d{2}|:(\d{2}):(\d{2}))$/.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static 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static random (min = 1, max = 10) {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static 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static 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static 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static 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static 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static union = (a, b) => {var newArr = a.concat(b);return this.unique(newArr);}//46.求两个集合的交集static 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static 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static formArray = (ary) => {var arr = [];if (Array.isArray(ary)) {arr = ary;} else {arr = Array.prototype.slice.call(ary);};return arr;}//49.最大值static max = (arr) => {return Math.max.apply(null, arr);}//50.最小值static min = (arr) => {return Math.min.apply(null, arr);}//51.求和static sum = (arr) => {return arr.reduce((pre, cur) => {return pre + cur})}//52.平均值static 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static trim = (str, type) => {type = type || 1switch (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*$)/g, "");default:return str;}}//54.字符转换，type: 1:首字母大写 2：首字母小写 3：大小写转换 4：全部大写 5：全部小写static changeCase = (str, type) => {type = type || 4switch (type) {case 1:return str.replace(/\b\w+\b/g, function (word) {return word.substring(0, 1).toUpperCase() + word.substring(1).toLowerCase();});case 2:return str.replace(/\b\w+\b/g, function (word) {return word.substring(0, 1).toLowerCase() + word.substring(1).toUpperCase();});case 3:return str.split('').map(function (word) {if (/[a-z]/.test(word)) {return word.toUpperCase();} else {return word.toLowerCase()}}).join('')case 4:return str.toUpperCase();case 5:return str.toLowerCase();default:return str;}}//55.检测密码强度static checkPwd = (str) => {var Lv = 0;if (str.length < 6) {return Lv}if (/[0-9]/.test(str)) {Lv++}if (/[a-z]/.test(str)) {Lv++}if (/[A-Z]/.test(str)) {Lv++}if (/[\.|-|_]/.test(str)) {Lv++}return Lv;}//56.函数节流器static debouncer = (fn, time, interval = 200) => {if (time - (window.debounceTimestamp || 0) > interval) {fn && fn();window.debounceTimestamp = time;}}//57.在字符串中插入新字符串static insertStr = (soure, index, newStr) => {var str = soure.slice(0, index) + newStr + soure.slice(index);return str;}//58.判断两个对象是否键值相同static isObjectEqual = (a, b) => {var aProps = Object.getOwnPropertyNames(a);var bProps = Object.getOwnPropertyNames(b);if (aProps.length !== bProps.length) {return false;}for (var i = 0; i < aProps.length; i++) {var propName = aProps[i];if (a[propName] !== b[propName]) {return false;}}return true;}//59.16进制颜色转RGBRGBA字符串static colorToRGB = (val, opa) => {var pattern = /^(#?)[a-fA-F0-9]{6}$/; //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static 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;}/*** 截取指定字节的字符串* @param str 要截取的字符穿* @param len 要截取的长度，根据字节计算* @param suffix 截取前len个后，其余的字符的替换字符，一般用“…”* @returns {*}*/static cutString (str, len, suffix) {if (!str) return "";if (len <= 0) return "";if (!suffix) suffix = "";var templen = 0;for (var i = 0; i < str.length; i++) {if (str.charCodeAt(i) > 255) {templen += 2;} else {templen++}if (templen == len) {return str.substring(0, i + 1) + suffix;} else if (templen > len) {return str.substring(0, i) + suffix;}}return str;}/*** 对象克隆&深拷贝* @method cloneObj* @param obj* @returns {{}}*/static cloneObj (obj) {var newO = {};if (obj instanceof Array) {newO = [];}for (var key in obj) {var val = obj[key];newO[key] = typeof val === 'object' ? arguments.callee(val) : val;}return newO;};/*** 对象克隆&深拷贝* @method clone* @param obj* @returns {{}}*/static clone (obj) {// Handle the 3 simple types, and null or undefinedif (null == obj || "object" != typeof obj) return obj;// Handle Dateif (obj instanceof Date) {var copy = new Date();copy.setTime(obj.getTime());return copy;}// Handle Arrayif (obj instanceof Array) {var copy = [];for (var i = 0, len = obj.length; i < len; ++i) {copy[i] = clone(obj[i]);}return copy;}// Handle Objectif (obj instanceof Object) {var copy = {};for (attr in obj) {if (obj.hasOwnProperty(attr)) copy[attr] = clone(obj[attr]);}return copy;}throw new Error("Unable to copy obj! Its type isn't supported.");}static setHtmlRem () {var rem = {baseRem: 40, // 基准字号，按照iphone6应该为20，此处扩大2倍，便于计算baseWidth: 750, // 基准尺寸宽，此处是按照ihpone6的尺寸rootEle: document.getElementsByTagName("html")[0],initHandle: function () {this.setRemHandle();this.resizeHandle();},setRemHandle: function () {var clientWidth = document.documentElement.clientWidth || document.body.clientWidth;this.rootEle.style.fontSize = clientWidth * this.baseRem / this.baseWidth + "px";},resizeHandle: function () {var that = this;window.addEventListener("resize", function () {setTimeout(function () {that.setRemHandle();}, 300);});}};rem.initHandle();}//17.生成随机颜色值static  getRandomColor () {const rgb = []for (let i = 0 ; i < 3; ++i){let color = Math.floor(Math.random() * 256).toString(16);color = color.length == 1 ? '0' + color : color;rgb.push(color);}return '#' + rgb.join('');}}
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前端JS常用工具方法 , 收藏
再加几个常用的计算百分比 /*** 计算百分比* @param {number} num 分子* @param {number} total 分母* @returns {number} 返回数百分比 ...
js常用工具方法utils
申明:不是我写的,但是我忘记在那篇文章上找到的记录下来 /*** 邮箱* @param {*} s*/ export const isEmail = (s) => {return /^([a- ...
自定义一些JS常用工具方法
1.去除字符串左右两端的空格 trim: function(str) {return str.replace(/(^\s*)|(\s*$)/g, ""); } 2.取时间戳 cre ...
jQuery常用工具方法
前面的话 jQuery提供一些与元素无关的工具方法,不必选中元素,就可以直接使用这些方法.如果理解原生javascript的继承原理,那么就能理解工具方法的实质.它是定义在jQuery构造函数上的方法 ...
JS常用属性方法大全
JS常用属性方法大全 1.输出语句:document.write(""); 2.JS中的注释为: 3.传统的HTML文档顺序是:document->html->(hea ...
PHP常用工具方法集...
PHP常用工具方法集,更新时间 2018-7-14 <?php /*** 常用工具方法集* Author: zj*//** 工具总述 1.加密解密 2.生成随机字符串 3.获取文件扩展名(后缀 ...
性能测试之前端性能优化（前端基础知识，前端性能测试常用工具，前端性能优化常见方法）
目录 1. 前端基础知识 1.1 为什么要关注前端页面的性能,了解页面的加载,渲染方式和顺序? 1.2 一次页面请求会经历哪些步骤? 1.3 页面的展示过程 2. 前端性能测试的常用工具 2.1 Go ...
concat合并的数组会有顺序么_超全的JS常用数组方法整理
前言常用数组方法汇总方法解析 1:concat(); 2:join(); 3:pop(); 4:shift(); 5:unshift(); 7:reverse(); 8:sort(); 9:sli ...
JS前端常用工具方法
目录 1. 邮箱 2. 手机号码 3. 电话号码 4. URL地址 5. 是否字符串 6. 是否数字 7. 是否Boolean 8. 是否函数 9. 是否为null 10. 是否undefined 1 ...
前端JS常用工具方法

前端JS常用工具方法

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