JS实现用户注册时获取短信验证码和倒计时功能

<div class="user-form"><form action="{{ path('zm_member_register') }}" method="post"><div class="form-list"><label class="register-label">手机号码</label><input class="regphone input-register" type="text" name="phone" placeholder="请输入手机号码" /></div><div class="form-list"><label class="register-label">验证码</label><input class="input-short" type="text" name="sms_salt" placeholder="请输短信验证码" /><input class="input-code" id="btn" type="button" value="发送验证码" /></div><input style="margin-top: 60px;" type="submit" class="registerSubmit form-sumbit" value="提交" /></form></div>

<script type="text/javascript">//倒计时60秒var wait=60;function time(o) {if (wait == 0) {o.removeAttribute("disabled");o.value="获取动态码";wait = 60;} else {o.setAttribute("disabled", true);o.value="重新发送(" + wait + ")";wait--;setTimeout(function() {time(o)}, 1000)}}$('.input-code').click(function() {var phone = $('.regphone').val();$.ajax({type: 'post',url: "{{ path('zm_member_get_salt') }}",data: {phone: phone,type: 1},dataType: 'json',success: function (result) {if (result.flag == 1) {// alert('成功');time(btn);} else {alert(result.content);}}});});</script>