短信验证码60s倒计时
html:
<input type="button" class="btn btn-primary" value="免费获取验证码" />
JS:
var wait=60;
function time(o) {
if (wait == 0) {
o.removeAttribute("disabled");
o.value="免费获取验证码";
wait = 60;
}else {
o.setAttribute("disabled", true);
o.value="重新发送(" + wait + ")";
wait--;
setTimeout(function() {
time(o)
},1000)
}
}