function isStatic(value) {  return(    typeof value === 'string' ||    typeof value === 'number' ||    typeof value === 'boolean' ||    typeof value === 'undefined' ||    value === null  )}

function isPrimitive(value) {  return isStatic(value) || typeof value === 'symbol'}

function isObject(value) {   let type = typeof value;   return value != null && (type == 'object' || type == 'function');}

function isObjectLike(value) {   return value != null && typeof value == 'object';}

function getRawType(value) {  return Object.prototype.toString.call(value).slice(8, -1)}//getoRawType([]) ==> Array

function isPlainObject(obj) {  return Object.prototype.toString.call(obj) === '[object Object]'}

function isArray(arr) {  return Object.prototype.toString.call(arr) === '[object Array]'}

Array.isArray = Array.isArray || isArray;

function isRegExp(value) {  return Object.prototype.toString.call(value) === '[object RegExp]'}

function isDate(value) {  return Object.prototype.toString.call(value) === '[object Date]'}

function isNative(value) {  return typeof value === 'function' && /native code/.test(value.toString())}

function isFunction(value) {  return Object.prototype.toString.call(value) === '[object Function]'}

function isLength(value) {   return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= Number.MAX_SAFE_INTEGER;}

function isArrayLike(value) {   return value != null && isLength(value.length) && !isFunction(value);}

function isEmpty(value) {  if (value == null) {    return true;  }  if (isArrayLike(value)) {    return !value.length;  }else if(isPlainObject(value)){     for (let key in value) {      if (hasOwnProperty.call(value, key)) {       return false;      }    }    return true;  }  return false;}

function cached(fn) {  let cache = Object.create(null);  return function cachedFn(str) {    let hit = cache[str];    return hit || (cache[str] = fn(str))  }}

let camelizeRE = /-(/w)/g;function camelize(str) {  return str.replace(camelizeRE, function(_, c) {    return c ? c.toUpperCase() : '';  })}//ab-cd-ef ==> abCdEf//使用記憶函數(shù)let _camelize = cached(camelize)

let hyphenateRE = //B([A-Z])/g;function hyphenate(str){  return str.replace(hyphenateRE, '-$1').toLowerCase()}//abCd ==> ab-cd//使用記憶函數(shù)let _hyphenate = cached(hyphenate);

function capitalize(str){  return str.charAt(0).toUpperCase() + str.slice(1)}// abc ==> Abc//使用記憶函數(shù)let _capitalize = cached(capitalize)

function extend(to, _from) {  for(let key in _from) {    to[key] = _from[key];  }  return to}

Object.assign = Object.assign || function(){  if(arguments.length == 0) throw new TypeError('Cannot convert undefined or null to object');    let target = arguments[0],    args = Array.prototype.slice.call(arguments, 1),    key  args.forEach(function(item){    for(key in item){      item.hasOwnProperty(key) && ( target[key] = item[key] )    }  })  return target}

let clone = Object.assign({}, target)

let clone = JSON.parse( JSON.stringify(target) )

function clone(value, deep){  if(isPrimitive(value)){    return value  }    if (isArrayLike(value)) { //是類數(shù)組    value = Array.prototype.slice.call(value)    return value.map(item => deep ? clone(item, deep) : item)    }else if(isPlainObject(value)){ //是對(duì)象      let target = {}, key;     for (key in value) {      value.hasOwnProperty(key) && ( target[key] = deep ? clone(value[key], deep) : value[key] )    }  }    let type = getRawType(value)    switch(type){    case 'Date':    case 'RegExp':     case 'Error': value = new window[type](value); break;  }  return value}

//運(yùn)行環(huán)境是瀏覽器let inBrowser = typeof window !== 'undefined';//運(yùn)行環(huán)境是微信let inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;let weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();//瀏覽器 UA 判斷l(xiāng)et UA = inBrowser && window.navigator.userAgent.toLowerCase();let isIE = UA && /msie|trident/.test(UA);let isIE9 = UA && UA.indexOf('msie 9.0') > 0;let isEdge = UA && UA.indexOf('edge/') > 0;let isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');let isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');let isChrome = UA && /chrome///d+/.test(UA) && !isEdge;

function getExplorerInfo() {  let t = navigator.userAgent.toLowerCase();  return 0 <= t.indexOf("msie") ? { //ie < 11    type: "IE",    version: Number(t.match(/msie ([/d]+)/)[1])  } : !!t.match(/trident//.+?rv:(([/d.]+))/) ? { // ie 11    type: "IE",    version: 11  } : 0 <= t.indexOf("edge") ? {    type: "Edge",    version: Number(t.match(/edge//([/d]+)/)[1])  } : 0 <= t.indexOf("firefox") ? {    type: "Firefox",    version: Number(t.match(/firefox//([/d]+)/)[1])  } : 0 <= t.indexOf("chrome") ? {    type: "Chrome",    version: Number(t.match(/chrome//([/d]+)/)[1])  } : 0 <= t.indexOf("opera") ? {    type: "Opera",    version: Number(t.match(/opera.([/d]+)/)[1])  } : 0 <= t.indexOf("Safari") ? {    type: "Safari",    version: Number(t.match(/version//([/d]+)/)[1])  } : {    type: t,    version: -1  }}

function isPCBroswer() {  let e = navigator.userAgent.toLowerCase()    , t = "ipad" == e.match(/ipad/i)    , i = "iphone" == e.match(/iphone/i)    , r = "midp" == e.match(/midp/i)    , n = "rv:1.2.3.4" == e.match(/rv:1.2.3.4/i)    , a = "ucweb" == e.match(/ucweb/i)    , o = "android" == e.match(/android/i)    , s = "windows ce" == e.match(/windows ce/i)    , l = "windows mobile" == e.match(/windows mobile/i);  return !(t || i || r || n || a || o || s || l)}

function unique(arr){  if(!isArrayLink(arr)){ //不是類數(shù)組對(duì)象    return arr  }  let result = []  let objarr = []  let obj = Object.create(null)    arr.forEach(item => {    if(isStatic(item)){//是除了symbol外的原始數(shù)據(jù)      let key = item + '_' + getRawType(item);      if(!obj[key]){        obj[key] = true        result.push(item)      }    }else{//引用類型及symbol      if(!objarr.includes(item)){        objarr.push(item)        result.push(item)      }    }  })    return resulte}

window.Set = window.Set || (function () {  function Set(arr) {    this.items = arr ? unique(arr) : [];    this.size = this.items.length; // Array的大小  }  Set.prototype = {    add: function (value) {      // 添加元素,若元素已存在,則跳過(guò)，返回 Set 結(jié)構(gòu)本身。      if (!this.has(value)) {        this.items.push(value);        this.size++;      }      return this;    },    clear: function () {      //清除所有成員，沒(méi)有返回值。      this.items = []      this.size = 0    },    delete: function (value) {      //刪除某個(gè)值，返回一個(gè)布爾值，表示刪除是否成功。      return this.items.some((v, i) => {        if(v === value){          this.items.splice(i,1)          return true        }        return false      })    },    has: function (value) {      //返回一個(gè)布爾值，表示該值是否為Set的成員。      return this.items.some(v => v === value)    },    values: function () {      return this.items    },  }  return Set;}());

function repeat(str, n) {  let res = '';  while(n) {    if(n % 2 === 1) {      res += str;    }    if(n > 1) {      str += str;    }    n >>= 1;  }  return res};//repeat('123',3) ==> 123123123

function dateFormater(formater, t){  let date = t ? new Date(t) : new Date(),    Y = date.getFullYear() + '',    M = date.getMonth() + 1,    D = date.getDate(),    H = date.getHours(),    m = date.getMinutes(),    s = date.getSeconds();  return formater.replace(/YYYY|yyyy/g,Y)    .replace(/YY|yy/g,Y.substr(2,2))    .replace(/MM/g,(M<10?'0':'') + M)    .replace(/DD/g,(D<10?'0':'') + D)    .replace(/HH|hh/g,(H<10?'0':'') + H)    .replace(/mm/g,(m<10?'0':'') + m)    .replace(/ss/g,(s<10?'0':'') + s)}// dateFormater('YYYY-MM-DD HH:mm', t) ==> 2019-06-26 18:30// dateFormater('YYYYMMDDHHmm', t) ==> 201906261830

function dateStrForma(str, from, to){  //'20190626' 'YYYYMMDD' 'YYYY年MM月DD日'  str += ''  let Y = ''  if(~(Y = from.indexOf('YYYY'))){    Y = str.substr(Y, 4)    to = to.replace(/YYYY|yyyy/g,Y)  }else if(~(Y = from.indexOf('YY'))){    Y = str.substr(Y, 2)    to = to.replace(/YY|yy/g,Y)  }  let k,i  ['M','D','H','h','m','s'].forEach(s =>{    i = from.indexOf(s+s)    k = ~i ? str.substr(i, 2) : ''    to = to.replace(s+s, k)  })  return to}// dateStrForma('20190626', 'YYYYMMDD', 'YYYY年MM月DD日') ==> 2019年06月26日// dateStrForma('121220190626', '----YYYYMMDD', 'YYYY年MM月DD日') ==> 2019年06月26日// dateStrForma('2019年06月26日', 'YYYY年MM月DD日', 'YYYYMMDD') ==> 20190626// 一般的也可以使用正則來(lái)實(shí)現(xiàn)//'2019年06月26日'.replace(/(/d{4})年(/d{2})月(/d{2})日/, '$1-$2-$3') ==> 2019-06-26

function getPropByPath(obj, path, strict) {   let tempObj = obj;   path = path.replace(//[(/w+)/]/g, '.$1'); //將[0]轉(zhuǎn)化為.0   path = path.replace(/^/./, ''); //去除開頭的.   let keyArr = path.split('.'); //根據(jù).切割   let i = 0;   for (let len = keyArr.length; i < len - 1; ++i) {    if (!tempObj && !strict) break;    let key = keyArr[i];    if (key in tempObj) {      tempObj = tempObj[key];    } else {      if (strict) {//開啟嚴(yán)格模式，沒(méi)找到對(duì)應(yīng)key值，拋出錯(cuò)誤        throw new Error('please transfer a valid prop path to form item!');      }      break;    }   }   return {    o: tempObj, //原始數(shù)據(jù)    k: keyArr[i], //key值    v: tempObj ? tempObj[keyArr[i]] : null // key值對(duì)應(yīng)的值   };};

function GetUrlParam(){  let url = document.location.toString();  let arrObj = url.split("?");  let params = Object.create(null)  if (arrObj.length > 1){    arrObj = arrObj[1].split("&");    arrObj.forEach(item=>{      item = item.split("=");      params[item[0]] = item[1]    })  }  return params;}// ?a=1&b=2&c=3 ==> {a: "1", b: "2", c: "3"}

function downloadFile(filename, data){  let DownloadLink = document.createElement('a');  if ( DownloadLink ){    document.body.appendChild(DownloadLink);    DownloadLink.style = 'display: none';    DownloadLink.download = filename;    DownloadLink.href = data;    if ( document.createEvent ){      let DownloadEvt = document.createEvent('MouseEvents');      DownloadEvt.initEvent('click', true, false);      DownloadLink.dispatchEvent(DownloadEvt);    }    else if ( document.createEventObject )      DownloadLink.fireEvent('onclick');    else if (typeof DownloadLink.onclick == 'function' )      DownloadLink.onclick();    document.body.removeChild(DownloadLink);  }}

function toFullScreen(){  let elem = document.body;  elem.webkitRequestFullScreen   ? elem.webkitRequestFullScreen()  : elem.mozRequestFullScreen  ? elem.mozRequestFullScreen()  : elem.msRequestFullscreen  ? elem.msRequestFullscreen()  : elem.requestFullScreen  ? elem.requestFullScreen()  : alert("瀏覽器不支持全屏");}

function exitFullscreen(){  let elem = parent.document;  elem.webkitCancelFullScreen   ? elem.webkitCancelFullScreen()  : elem.mozCancelFullScreen  ? elem.mozCancelFullScreen()  : elem.cancelFullScreen  ? elem.cancelFullScreen()  : elem.msExitFullscreen  ? elem.msExitFullscreen()  : elem.exitFullscreen  ? elem.exitFullscreen()  : alert("切換失敗,可嘗試Esc退出");}

window.requestAnimationFrame = window.requestAnimationFrame ||  window.webkitRequestAnimationFrame ||  window.mozRequestAnimationFrame ||  window.msRequestAnimationFrame ||  window.oRequestAnimationFrame ||  function (callback) {    //為了使setTimteout的盡可能的接近每秒60幀的效果    window.setTimeout(callback, 1000 / 60);  };  window.cancelAnimationFrame = window.cancelAnimationFrame ||  Window.webkitCancelAnimationFrame ||  window.mozCancelAnimationFrame ||  window.msCancelAnimationFrame ||  window.oCancelAnimationFrame ||  function (id) {    //為了使setTimteout的盡可能的接近每秒60幀的效果    window.clearTimeout(id);  }

function _isNaN(v){  return !(typeof v === 'string' || typeof v === 'number') || isNaN(v)}

function max(arr){  arr = arr.filter(item => !_isNaN(item))  return arr.length ? Math.max.apply(null, arr) : undefined}//max([1, 2, '11', null, 'fdf', []]) ==> 11

function min(arr){  arr = arr.filter(item => !_isNaN(item))  return arr.length ? Math.min.apply(null, arr) : undefined}//min([1, 2, '11', null, 'fdf', []]) ==> 1

function random(lower, upper){  lower = +lower || 0  upper = +upper || 0  return Math.random() * (upper - lower) + lower;}//random(0, 0.5) ==> 0.3567039135734613//random(2, 1) ===> 1.6718418553475423//random(-2, -1) ==> -1.4474325452361945

Object.keys = Object.keys || function keys(object) {  if(object === null || object === undefined){    throw new TypeError('Cannot convert undefined or null to object');  }  let result = []  if(isArrayLike(object) || isPlainObject(object)){    for (let key in object) {      object.hasOwnProperty(key) && ( result.push(key) )    }  }  return result}

Object.values = Object.values || function values(object) {  if(object === null || object === undefined){    throw new TypeError('Cannot convert undefined or null to object');  }  let result = []  if(isArrayLike(object) || isPlainObject(object)){    for (let key in object) {      object.hasOwnProperty(key) && ( result.push(object[key]) )    }  }  return result}

Array.prototype.fill = Array.prototype.fill || function fill(value, start, end) {  let ctx = this  let length = ctx.length;    start = parseInt(start)  if(isNaN(start)){    start = 0  }else if (start < 0) {    start = -start > length ? 0 : (length + start);   }      end = parseInt(end)   if(isNaN(end) || end > length){     end = length   }else if (end < 0) {    end += length;  }    while (start < end) {    ctx[start++] = value;  }  return ctx;}//Array(3).fill(2) ===> [2, 2, 2]

Array.prototype.includes = Array.prototype.includes || function includes(value, start){  let ctx = this  let length = ctx.length;    start = parseInt(start)  if(isNaN(start)){    start = 0  }else if (start < 0) {    start = -start > length ? 0 : (length + start);   }    let index = ctx.indexOf(value)    return index >= start;}

Array.prototype.find = Array.prototype.find || function find(fn, ctx){  fn = fn.bind(ctx)    let result;  this.some((value, index, arr), thisValue) => {    return fn(value, index, arr) ? (result = value, true) : false  })    return result}

Array.prototype.findIndex = Array.prototype.findIndex || function findIndex(fn, ctx){  fn = fn.bind(ctx)    let result;  this.some((value, index, arr), thisValue) => {    return fn(value, index, arr) ? (result = index, true) : false  })    return result}

window.onload = function(){  setTimeout(function(){    let t = performance.timing    console.log('DNS查詢耗時(shí) ：' + (t.domainLookupEnd - t.domainLookupStart).toFixed(0))    console.log('TCP鏈接耗時(shí) ：' + (t.connectEnd - t.connectStart).toFixed(0))    console.log('request請(qǐng)求耗時(shí) ：' + (t.responseEnd - t.responseStart).toFixed(0))    console.log('解析dom樹耗時(shí) ：' + (t.domComplete - t.domInteractive).toFixed(0))    console.log('白屏?xí)r間 ：' + (t.responseStart - t.navigationStart).toFixed(0))    console.log('domready時(shí)間 ：' + (t.domContentLoadedEventEnd - t.navigationStart).toFixed(0))    console.log('onload時(shí)間 ：' + (t.loadEventEnd - t.navigationStart).toFixed(0))    if(t = performance.memory){      console.log('js內(nèi)存使用占比 ：' + (t.usedJSHeapSize / t.totalJSHeapSize * 100).toFixed(2) + '%')    }  })}

document.addEventListener('keydown', function(event){  return !(    112 == event.keyCode || //F1    123 == event.keyCode || //F12    event.ctrlKey && 82 == event.keyCode || //ctrl + R    event.ctrlKey && 78 == event.keyCode || //ctrl + N    event.shiftKey && 121 == event.keyCode || //shift + F10    event.altKey && 115 == event.keyCode || //alt + F4    "A" == event.srcElement.tagName && event.shiftKey //shift + 點(diǎn)擊a標(biāo)簽  ) || (event.returnValue = false)});

['contextmenu', 'selectstart', 'copy'].forEach(function(ev){  document.addEventListener(ev, function(event){    return event.returnValue = false  })});