<script type="text/javascript"> var countdown = 60; function settime(val) { if (countdown == 0) { val.removeAttribute("disabled"); val.value = "免费获取验证码"; countdown = 60; } else { val.setAttribute("disabled", true); val.value = "重新发送(" + countdown + ")"; countdown--; } setTimeout(function(){ settime(val) },1000) } </script>
<input type="button" id ="btn" value="免费获取验证码" onclick="settime(this)" />
时间: 2024-10-11 00:58:43