<div class="time-left">
<div class="time"><span id="minute">03</span>:<span id="second">00</span></div>
<div class="start">
<a href="javascript:void(0)" id="start" onclick="start_time()"><img src="paimai/start.png" /></a>
<a href="paimai2.html"><img src="paimai/next.png" /></a>
</div>
<div class="clear"></div>
</div>
var total_time = 3 * 60; // 3分钟
var timer;
function left_time() {
if(total_time > 0) {
var minute = Math.floor(total_time / 60);
var second = Math.floor(total_time % 60);
minute = str_num(minute);
second = str_num(second);
document.getElementById("minute").innerHTML = minute;
document.getElementById("second").innerHTML = second;
--total_time;
console.log(total_time)
} else {
clearInterval(timer);
document.getElementById("minute").innerHTML = "00";
document.getElementById("second").innerHTML = "00";
document.getElementById("start").style.display = "none";
document.getElementById("next").style.display = "block";
}
}
function str_num(num) {
return num > 9 ? num : "0" + num;
}
function start_time() {
setInterval("left_time()", 1000);
}