<div class="form-group"> 
<input type="text" placeholder="请输入短信验证码" id="smsCaptcha" name="smsCaptcha" class="form-control" 
data-bv-notempty data-bv-notempty-message="验证码不能为空" 
data-bv-regexp="true" data-bv-regexp-regexp="[0-9]{6}" data-bv-regexp-message="验证码格式不正确" > 
</div> <div class="form-group"> 
<input type="email" class="form-control" id="exampleInputEmail1" placeholder="Enter email" 
data-bv-notempty data-bv-notempty-message="验证码不能为空" > 
</div>

<label for="exampleInputEmail1">用户名</label> 
<div class="input-group" > 
<input type="text" class="form-control required" placeholder="用户名" id="username" name="username" data-bv-notempty data-bv-notempty-message="请输入用户名" /> <span class="input-group-addon"> 
<span class="glyphicon glyphicon-user">
</span> 
</span> 
</div>

<div class="form-group"> 
<label for="exampleInputEmail1">用户名</label> 
<div class="input-group" > 
<input type="text" class="form-control required" placeholder="用户名" id="username" name="username" data-bv-notempty data-bv-notempty-message="请输入用户名" /> <span class="input-group-addon"> 
<span class="glyphicon glyphicon-user">
</span> 
</span> 
</div> 
</div>

var form = $('form'); 
var formType = form.attr('class'); 
if(formType != null){ 
//用get和post标识表单类型 
//get用于标识搜索类型的表单 
//post用于标识添加，更新类型的表单 
var get = formType.indexOf('get'); 
var post = formType.indexOf('post'); 
form.submit(function(){ 
if(get != -1){ 
return ; 
} 
if(post != -1){ 
if(!submited){ 
submited = true; 
$("button[type=submit]").prop('disabled',true); 
}else{ 
return false; 
} 
} 
}); 
}