倒计时 Remaining time
function remainingTime (rt) {
var hour = (rt | 0)/(3600*1000) | 0,
minute = ((rt | 0)%(3600*1000))/(60*1000) | 0,
second = ((rt | 0)%(3600*1000)%(60*1000))/1000 | 0;
if (rt <= 0) {
return;
} else {
setTimeout(function(){
remainingTime(rt - 1000);
}, 1000);
return {
hour: hour,
minute: minute,
second: second
};
}
}