ajax请求以及常用函数封装

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}
    },
}