Question

JS计时器要有时分秒，而且刷新页面要重置

要求格式 00:00:00 而不是 0:0:0

Answer 1

window.onload = function(){
var HH = 0;
var mm = 0;
var ss = 0;
var str = '';
var timer = setInterval(function(){
str = "";

if(++ss==60)
{
if(++mm==60)
{
HH++;
mm=0;
}
ss=0;
}

str+=HH<10?"0"+HH:HH;
str+=":";
str+=mm<10?"0"+mm:mm;
str+=":";
str+=ss<10?"0"+ss:ss;
document.getElementById("d").innerHTML = str;
},1000);
};

Answer 2

http://www.cnblogs.com/zhangpengshou/archive/2012/07/19/2599053.html