javascript Date擴充(日期格式化)

Date.prototype.format = function (format) {              /*              * eg:format="yyyy-MM-dd hh:mm:ss";              */              if (!format) {              format = "yyyy-MM-dd hh:mm:ss";              }                  var o = {              "M+": this.getMonth() + 1, // month              "d+": this.getDate(), // day              "h+": this.getHours(), // hour              "m+": this.getMinutes(), // minute              "s+": this.getSeconds(), // second              "q+": Math.floor((this.getMonth() + 3) / 3), // quarter              "S": this.getMilliseconds()              // millisecond              };                  if (/(y+)/.test(format)) {              format = format.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));              }                  for (var k in o) {              if (new RegExp("(" + k + ")").test(format)) {              format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));              }              }              return format;              }