Question

如何用JavaScript写一个60秒倒计时的js文件

Answer 1

var countdown = 60;
function settime(obj) {
if (countdown == 0) {
obj.html("获取验证码");
countdown = 60;
return;
} else {
obj.html(countdown + "s");
countdown--;
}
setTimeout(function () {
settime(obj)
}, 1000)
}