function chkTime(num){ return num<十?"0"+num:num; } Date.prototype

function chkTime(num){ return num<10?"0"+num:num; } Date.prototype.

function chkTime(num){
??? ??? ??? return num<10?"0"+num:num;
}

Date.prototype.format = function(date , dformat){

??? ??? ??? //Y:年　m:月　d:日　H:时　i:分　s:秒
??? ??? ??? var year = date.getFullYear();
??? ??? ??? var month = chkTime(date.getMonth()+1);
??? ??? ??? var day = chkTime(date.getDate());
??? ??? ??? var hours = chkTime(date.getHours());
??? ??? ??? var minutes = chkTime(date.getMinutes());
??? ??? ??? var seconds = chkTime(date.getSeconds());

??? ??? ??? return dformat.replace("Y",year).replace("m",month).replace("d",day)

　　　　　　　　.replace("H",hours).replace("i",minutes).replace("s",seconds);
??? ??? ????
??? ??? }

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使用方法：

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　　　var date = new Date();
??? ???? alert(date.format(date, "Y-m-d H:i:s"));