Date.prototype.format =function(format)    {        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;    }//var d =new Date().format('yyyy-MM-dd');