Js实用函数合集（二）

function setCookie(name, value, Hours) {
    var d = new Date();
    var offset = 8;
    var utc = d.getTime() + (d.getTimezoneOffset() * 60000);
    var nd = utc + (3600000 * offset);
    var exp = new Date(nd);
    exp.setTime(exp.getTime() + Hours * 60 * 60 * 1000);
    document.cookie = name + "=" + escape(value) + ";path=/;expires=" + exp.toGMTString() + ";domain=360doc.com;"
}

function getCookie(name) {
    var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));
    if (arr != null) return unescape(arr[2]);
    return null
}

function 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;
        }
    })
}

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

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 unique(arr){
  if(!isArrayLink(arr)){ //不是类数组对象
    return arr
  }
  let result = []
  let objarr = []
  let obj = Object.create(null)
  arr.forEach(item => {
    if(isStatic(item)){//是除了symbol外的原始数据
      let key = item + '_' + getRawType(item);
      if(!obj[key]){
        obj[key] = true
        result.push(item)
      }
    }else{//引用类型及symbol
      if(!objarr.includes(item)){
        objarr.push(item)
        result.push(item)
      }
    }
  })
  return resulte
}

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("浏览器不支持全屏");
}

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

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 isNumber(val){
    var regPos = /^\d+(\.\d+)?$/; //非负浮点数
    var regNeg = /^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$/; //负浮点数
    if(regPos.test(val) || regNeg.test(val)){
        return true;
    }else{
        return false;
    }
}

function hasRepeatValue(a) {
        return /(\x0f[^\x0f]+)\x0f[\s\S]*\1/.test("\x0f" + a.join("\x0f\x0f") + "\x0f");
}

function getIdcardData(){
   var ido=document.getElementById('idCardNumberHandle');//身份证号input元素的ID
   var bd=document.getElementById('birthdayHandle');
   var sex=document.getElementById('sexHandle');
   if(!/^\d{6}((?:19|20)((?:\d{2}(?:0[13578]|1[02])(?:0[1-9]|[12]\d|3[01]))|(?:\d{2}(?:0[13456789]|1[012])(?:0[1-9]|[12]\d|30))|(?:\d{2}02(?:0[1-9]|1\d|2[0-8]))|(?:(?:0[48]|[2468][048]|[13579][26])0229)))\d{2}(\d)[xX\d]$/.test(ido.value)){
      alert('身份证号非法.');
      return;
   }
   bd.value=(RegExp.$1).substr(0,4)+'-'+(RegExp.$1).substr(4,2)+'-'+(RegExp.$1).substr(6,2);//设置出生日期
   ex.value=(parseInt(ido.value.charAt(ido.value.length-2))%2==0?'女':'男');//设置性别
}

function insertAfter(newElement,targetElement){
  var parent = targetElement.parentNode;
  if (parent.lastChild == targetElement) {
    parent.appendChild(newElement);
  } else {
    parent.insertBefore(newElement,targetElement.nextSubling)
  }
}

var getURLParam = function(name) {
    return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)', "ig").exec(location.search) || [, ""])[1].replace(/\+/g, '%20')) || null;
};