JSON 体验JSON （二）json格式化日期

 json格式化日期

Date.prototype.format = function(format) {  
             var o = {
              "M+" : this.getMonth()+1,
              "d+" : this.getDate(),
              "h+" : this.getHours(), 
              "m+" : this.getMinutes(),
              "s+" : this.getSeconds(),
              "q+" : Math.floor((this.getMonth()+3)/3),
              "S" : this.getMilliseconds()
             }
             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;
        }