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)
    }
  }

posted on 2018-01-10 17:30  东西南北212  阅读(157)  评论(0编辑  收藏  举报