表单验证

<script type="text/javascript" src="http://validform.rjboy.cn/Validform/v5.3.2/Validform_v5.3.2_min.js"></script>

<script type="text/javascript">
$(function(){
    //$(".reg").Validform();  //就这一行代码！;
    //修改默认验证成功提示
    $.Tipmsg.r = ‘‘;
　　//reg_frm为表单id
    $("#reg_frm").Validform({
        tiptype:2,
        btnSubmit:"#register",
        btnReset:"#reset"

    });
})
</script>

<form id="reg_frm" action="<?=site_url(‘login/reg‘)?>" method="post">
　　<fieldset>
   　　 <label class="block clearfix">
       　　<span class="block input-icon input-icon-right">
          　　<input id="reg_email" name="email" type="email" class="form-control inputxt" ajaxurl="<?=base_url(‘login/check_user‘)?>" datatype="*,e" errormsg="请输入正确的邮箱！" nullmsg="邮箱不能为空！" placeholder="邮箱" />
              <i class="icon-envelope"></i>
           </span>
           <span style="color:red;"></span>
        </label>

     　　<label class="block clearfix">
        　　<span class="block input-icon input-icon-right">
           　　 <input id="reg_nick" name="nick" type="text" class="form-control inputxt" datatype="*" errormsg="请输入昵称！" nullmsg="昵称不能为空！" placeholder="昵称" />
                <i class="icon-user"></i>
           </span>
           <span style="color:red;"></span>
        </label>

     　　<label class="block clearfix">
            <span class="block input-icon input-icon-right">
        　　　　<input id="reg_password" name="reg_password" type="password" class="form-control inputxt" datatype="*6-16" errormsg="密码必须为6-16位任意字符！" nullmsg="密码不能为空！"  placeholder="密码" />
                <i class="icon-lock"></i>
            </span>
            <span style="color:red;"></span>
         </label>

         <label class="block clearfix">
            <span class="block input-icon input-icon-right">
            　　 <input id="reg_repassword" name ="reg_repassword" type="password" class="form-control inputxt" datatype="*6-16" nullmsg="两次密码不一致！" recheck="reg_password" errormsg="两次密码不一致！" placeholder="再输一次" />
                 <i class="icon-retweet"></i>
             </span>
           　 <span style="color:red;"></span>
          </label>

          <label class="block">
          　　<input id="accept" name="ace" type="checkbox" checked="checked" value="1" class="ace" datatype="*" nullmsg="请接受用户协议！" errormsg="请接受用户协议！" />
          
                                                        
         </label>
                                                    
         <div class="space-24"></div>

         　　<div class="clearfix">
             　　<button id="reset" type="reset" class="width-30 pull-left btn btn-sm">
                    <i class="icon-refresh"></i>
                      重置
                 </button>

                 <button id="register" type="button" class="width-65 pull-right btn btn-sm btn-success">
                      注册
                      <i class="icon-arrow-right icon-on-right"></i>
                 </button>
              </div>
       </fieldset>
 </form>

    /**
     *验证用户名是否存在
     *@see check_user()
     *@author zrp <zouruiping@infoclouds.net>
     *@version 2014年4月17日14:30:25
     */
    public function check_user(){
        $email = trim($this->input->post(‘param‘,true));
        $res = $this->user_model->check_user($email);
        if(!empty($res)){
            $data = array(
                ‘info‘    => ‘该邮箱已被注册‘,
                ‘status‘=> ‘n‘　　//状态
            );
        }else{
            $data = array(
                ‘info‘    => ‘‘,
                ‘status‘=> ‘y‘
            );
        }
        echo json_encode($data);
    }