jQuery基于闭包实现的显示与隐藏div功能示例

<div class="binds">
    <div class="phonebind">
      <h3>手机绑定</h3>
      <p>当前手机号码：<span id="oldPhone">$!{user.phone}</span><input type="button" class="btnInput" id="rebindPhone" value="重新绑定"></p>
      <div class="updatetelwrap hidden">
        <div class="newphonewrap">
          <label>新手机号码<em>*</em></label>
          <input type="text" class="formatText" id="newPhone" />
        </div>
        <div class="identifywrap">
          <label>短信验证码<em>*</em></label>
          <input type="text" class="inputcode" />
          <input type="button" value="获取短信验证码" class="identifycode"/>
          <p><input type="button" value="绑定" class="bindbtn" id="newphonebind" style="float: left;" onclick="javascript:bindPhone();" /></p>
        </div>
      </div>
    </div>
    <div class="emailbind">
      <h3>邮箱绑定</h3>
      <p>当前电子邮箱：<span id="oldEmail">$!{user.email}</span><input type="button" class="btnInput" value="重新绑定" id="rebindEmail"></p>
      <div class="update-email-wrap hidden">
        <div class="emailwrap">
          <label>新电子邮箱<em>*</em></label>
          <input type="text" class="formatText" id="newEmail" />
          <p><input type="button" value="发送验证邮件" id="sendEmail" style="float: left;" class="btnInput" onclick="javascript:bindEmail();" /></p>
        </div>
      </div>
    </div>
  </div>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script>
  $(function(){
    $(document).on("click","#rebindPhone",bindInputclick());
    $(document).on("click","#rebindEmail",bindInputclick());
  })
  function bindInputclick(){
    var i=2;
    return function(){
          if(i%2==0){
            $(this).parent().next().slideDown();
          }
          else {
            $(this).parent().next().slideUp();
          }
          i++;
    }
  }
</script>