格式化时间：
function formatDateTime(timeStamp){ var date = new Date(timeStamp); var y = date.getFullYear(); var m = date.getMonth() + 1; m = m < 10 ? ('0' + m) : m; var d = date.getDate(); d = d < 10 ? ('0' + d) : d; var h = date.getHours(); h = h < 10 ? ('0' + h) : h; var minute = date.getMinutes(); var second = date.getSeconds(); minute = minute < 10 ? ('0' + minute) : minute; second = second < 10 ? ('0' + second) : second; return y + '-' + m + '-' + d+' '+h+':'+minute+':'+second; }把单位为秒的时间，改成一般时间：
function formatSecond(second){ var h = Math.floor(second / 3600); h = h < 10 ? ('0' + h) : h; var minute = Math.floor(second / 60); minute = minute < 10 ? ('0' + minute) : minute; var second = Math.floor(second % 60); second = second < 10 ? ('0' + second) : second; return h != "00" ? (h+“:”+minute":"+second) : (minute+":"+second; }对比时间，并返回“几天前”或“几分钟前”等： （注：该方法在IOS系统中无效，若想要同时兼容IOS和Android，则需要引入第三方插件moment.js）
function getTime(date){ var now = new Date(); var ctime = new Date(date); //var now = moment(); //兼容IOS和Android // var ctime = moment(date);//兼容IOS和Android // var date3= now -ctime; //兼容IOS和Android 时间差的毫秒数 var date3=now.getTime()-ctime.getTime() //时间差的毫秒数 //计算出相差天数 var days=Math.floor(date3/(24*3600*1000)); if(days == 1){ return "昨天"; }else if(days == 2){ return "前天"; }else if(days > 2 && days < 31){ return days+"天前"; }else if(days >= 31 && days <= 2*31){ return "一个月前"; }else if(days > 2* 31 && days <= 3*31){ return "2个月前"; }else if(days > 3* 31 && days <= 4*31){ return "3个月前"; } //计算出小时数 var leave1=date3%(24*3600*1000); //计算天数后剩余的毫秒数 var hours = Math.floor(leave1/(3600*1000)); if(hours > 0)return hours+"小时前" //计算相差分钟数 var leave2=leave1%(3600*1000); //计算小时数后剩余的毫秒数 var minutes=Math.floor(leave2/(60*1000)); if(minutes > 0)return minutes+"分钟前" if(minutes == 0)return "1分钟前"; //计算相差秒数 var leave3=leave2%(60*1000); //计算分钟数后剩余的毫秒数 var seconds=Math.round(leave3/1000); if(seconds > 0)return seconds+"秒前" // 日期格式化 return date; }查询参数：
function getQueryString(name){ var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)"); var r = window.location.search.substr(1).match(reg); if(r!=null)return unescape(r[2]); return null; }判断设备类型：
function isAS() { var ua = navigator.userAgent.toLowerCase(); if (ua.match(/iPhone\sOS/i) == "iphone os") { return 1; } else if (ua.match(/Android/i) == "android") { return 2; } }关于cookie：
let $cookie = { getCookie: function(t) { return null == document.cookie.match(RegExp("(^" + t + "| " + t + ")=([^;]*)")) ? "" : decodeURIComponent(RegExp.$2) }, setCookie: function(t, e, i) { i = new Date((new Date).getTime() + 36e5 * i), document.cookie = t + "=" + escape(e) + "; path=/; expires=" + i.toGMTString() }, delCookie: function(t) { $cookie.setCookie(t, "", -1) }, getVersionCookie: function(name){ let strcookie = document.cookie;//获取cookie字符串 let r = new RegExp(name+'=([^,]*)'); if(strcookie.match(r)) { return strcookie.match(r)[1] } return ''; } }ajax请求：
var md5 = require("./md5") var http = { get: function(url, data, success, error) { var self = this; $.ajax({ type: "GET", url: url, data: data, dataType: "json", headers: self._checkFun(data), success: function (res) { success && success(res); }, error: function(err) { error && error(); } }) }, post: function(url, data, success, error) { var self = this; $.ajax({ type: "POST", url: url, data: data, dataType: "json", headers: self._checkFun(data), success: function (res) { success && success(res); }, error: function(err) { error && error(); } }) }, _checkFun: function(data){ let sign = []; let salt = '12312314232'; let timeStamp = Date.now(); sign.push(salt); sign.push(timeStamp); for (let i in data) { sign.push(data[i]) } sign = sign.sort(); sign = md5.hex_md5(sign.join('')); return {timeStamp, sign} }, }