<script src="/jquery-2.1.4.min.js"></script><!-- 引入bootstrap --><link rel="stylesheet" href="/bootstrap.min.css"><script>var countdown = 10;//发送验证码倒计时方法function setTime(obj) { if (countdown == 0) {obj.attr('disabled', false);//obj.removeattr("disabled");obj.html("获取验证码");countdown = 10;return;} else {obj.attr('disabled', true);obj.html("重新发送(" + countdown + ")");countdown--;}setTimeout(function () {setTime(obj)}, 1000)}//文档内容加载完成$(function(){//点击获取验证码后，执行倒计时方法$("#getNum").click(function(){setTime($(this));});})</script><div class="text-center"><button type="button" value="获取" class="btn btn-info btn-lg getNum" id="getNum">获取验证码</button></div>
