====== JS Utils 工具类 ======
集合了一些常用的方法

  * [[util-ajax|ajaxRequest——基于jq二次封装ajax请求]]
  * [[util-pagelist——基于layui封装的ajax分页列表]]
  * [[UrlUtil|UrlUtil是一个常用的url集中处理方法]]

var utils = require('utils/utils.js');

===== 使用说明 =====

  /**
   * @sys    获取浏览器类型和版本信息
   */
  var browser = (function(){
      var ua = window.navigator.userAgent.toLowerCase(), sys = null, s;
      if(s = ua.match(/rv:([\d.]+)\) like gecko/)){sys = {type:'ie',version:s[1]};}
      else if(s = ua.match(/msie ([\d.]+)/)){sys = {type:'ie',version:s[1]};}
      else if(s = ua.match(/firefox\/([\d.]+)/)){sys = {type:'firefox',version:s[1]};}
      else if(s = ua.match(/chrome\/([\d.]+)/)){sys = {type:'chrome',version:s[1]};}
      else if(s = ua.match(/opera.([\d.]+)/)){sys = {type:'opera',version:s[1]};}
      else if(s = ua.match(/version\/([\d.]+).*safari/)){sys = {type:'safari',version:s[1]};}
      else if(s = ua.match(/ucbrowser\/([\d.]+)/)){sys = {type:'uc',version:s[1]};}
      else if(s = ua.match(/micromessenger\/([\d.]+)/)){sys = {type:'wx',version:s[1]};}
      else{sys = {type:'unknown',version:'unknown'};}
      sys.isMobile = !!ua.match(/AppleWebKit.*Mobile.*!/) || !!ua.match(/(iPhone|iPod|Android|ios|iPad)/i);
      return sys;
  })();
  
  /**
   * @desc    格式化日期时间
   * @param   {[Date]}    date
   * @param   {[String]}    format时间日期格式
   * @return  {[String]}
   */
  const formatTime = (date, format='yyyy-MM-dd hh:mm:ss') => {
      let dateObj = {
          "M+": date.getMonth() + 1,
          "d+": date.getDate(),
          "h+": date.getHours(),
          "m+": date.getMinutes(),
          "s+": date.getSeconds(),
          "q+": Math.floor((date.getMonth() + 3) / 3),
          "S+": date.getMilliseconds()
      };
  
      if (/(y+)/i.test(format)) {
          format = format.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length));
      }
      for (let k in dateObj) {
          if (new RegExp("(" + k + ")").test(format)) {
              format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? dateObj[k] : ("00" + dateObj[k]).substr(("" + dateObj[k]).length));
          }
      }
      return format;
  }
  
  /**
   * @desc   判断是否为手机号
   * @param  {String|Number} str
   * @return {Boolean}
   */
  const isPhoneNum = str => {
      return /^(0|86|17951)?(1[3-9][0-9])[0-9]{8}$/.test(str)
  }
  
  /**
   * @desc  判断是否为身份证号
   * @param  {String|Number} str
   * @return {Boolean}
   */
  const isIdCard = str => {
      return /^(^[1-9]\d{7}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])\d{3}$)|(^[1-9]\d{5}[1-9]\d{3}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])((\d{4})|\d{3}[Xx])$)$/.test(str)
  }
  
  /**
   * @desc   校验Ip地址格式
   * @param  {String} ipvale
   * @return {Boolean}
   */
  const checkIp = ipvale => {
      // var regex = /^([1-9]|[1-9]\d|1\d{2}|2[0-1]\d|22[0-3])(\.(\d|[1-9]\d|1\d{2}|2[0-4]\d|25[0-5])){3}$/;
      var regex = /^(\d{1,2}|1\d\d|2[0-1]\d|22[0-3])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$/;
      return regex.test(ipvale);
  }
  
  /**
   * @desc   jsonString转化为object
   * @param  {String} str
   * @return {object|string|null}
   */
  const JsonToString = str => {
      if (typeof(str) == "object") {
          return p;
      } else if (typeof(str) == "string") {
          try {
              return JSON.parse(str);
          } catch (e) {
              return str;
          }
      }
      return null;
  }
  
  /**
   * [数组分页]
   * @param     {[Number]}    pageNo   [页数]
   * @param     {[Number]}    pageSize [每页显示的数量]
   * @param     {[Array]}     array    [被分页的数组]
   * @return    {[Array]}
   */
  const pagination = (pageNo, pageSize, array) => {
      var offset = (pageNo - 1) * pageSize;
      return (offset + pageSize >= array.length) ? array.slice(offset, array.length) : array.slice(offset, offset + pageSize);
  }
  
  /**
   * [修改URL参数]
   * @param     {[type]}    url [url]
   * @param     {[type]}    arg [key]
   * @param     {[type]}    val [value]
   * @return    {[type]}        [new url]
   */
  const changeUrlArg = (url, arg, val) => {
      var pattern = arg + '=([^&]*)';
      var replaceText = arg + '=' + val;
      return url.match(pattern) ? url.replace(eval('/(' + arg + '=)([^&]*)/gi'), replaceText) : (url.match('[\?]') ? url + '&' + replaceText : url + '?' + replaceText);
  }
  
  /**
   * [获取URL参数]
   * @param     {[type]}    name [key]
   * @return    {[type]}         [value]
   */
  const getUrlParameter = name => {
      var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
      var r = window.location.search.substr(1).match(reg);
      if (r != null) return unescape(r[2]);
      return null;
  }
  
  /**
   * [删除URL参数]
   * @param     {[type]}    url [url]
   * @param     {[type]}    ref [key]
   * @return    {[type]}        [new url]
   */
  const delQueStr = (url, ref) => {
      var str = "";
      if (url.indexOf('?') != -1)
          str = url.substr(url.indexOf('?') + 1);
      else
          return url;
      var arr = "";
      var returnurl = "";
      var setparam = "";
      if (str.indexOf('&') != -1) {
          arr = str.split('&');
          for (i in arr) {
              if (arr[i].split('=')[0] != ref) {
                  returnurl = returnurl + arr[i].split('=')[0] + "=" + arr[i].split('=')[1] + "&";
              }
          }
          return url.substr(0, url.indexOf('?')) + "?" + returnurl.substr(0, returnurl.length - 1);
      } else {
          arr = str.split('=');
          if (arr[0] == ref)
              return url.substr(0, url.indexOf('?'));
          else
              return url;
      }
  }
  
  /**
   * [Base64加密解密]
   * @encode     加密
   * @decode     解密
   */
  const Base64 = {
    encode(str) {
        // first we use encodeURIComponent to get percent-encoded UTF-8,
        // then we convert the percent encodings into raw bytes which
        // can be fed into btoa.
        return btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g,
            function toSolidBytes(match, p1) {
                return String.fromCharCode('0x' + p1);
            }));
    },
    decode(str) {
        // Going backwards: from bytestream, to percent-encoding, to original string.
        return decodeURIComponent(atob(str).split('').map(function (c) {
            return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
        }).join(''));
    }
  };
  
  module.exports = {
      formatTime: formatTime,
      isPhoneNum: isPhoneNum,
      isIdCard: isIdCard,
      checkIp: checkIp,
      JsonToString: JsonToString,
      pagination: pagination,
      changeUrlArg: changeUrlArg,
      getUrlParameter: getUrlParameter,
      delQueStr: delQueStr,
      Base64: Base64
  }