Date Format.js

Date format.js

  Date.prototype.Format = function(fmt) {
    //author: meizz
    var o = {
      "M+": this.getMonth() + 1,
      //月份
      "d+": this.getDate(),
      //日
      "h+": this.getHours(),
      //小时
      "m+": this.getMinutes(),
      //分
      "s+": this.getSeconds(),
      //秒
      "q+": Math.floor((this.getMonth() + 3) / 3),
      //季度
      "S": this.getMilliseconds() //毫秒
    };
    if (/(y+)/.test(fmt))
    fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
    for (var k in o)
    if (new RegExp("(" + k + ")").test(fmt))
    fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
    return fmt;
  }