我是Bootstrap的初学者,我已经看到了很多Bootstrap 3表单验证插件等,但是我没有找到Bootstrap 4的任何内容。
我正在尝试验证多种形式,这是我的代码:
<!-- Contact -->
<div class="container white">
<div class="row">
<div class="container white percent100">
<div class="col-lg-12">
<div class="padder-t2">
<h1>Contact</h1>
<div class="horiz-divider"></div>
</div>
</div>
</div>
</div>
<div class="row padder-t padder-b">
<div class="container white">
<div class="col-lg-12">
<!-- Form -->
<form class="form-horizontal" action=" " method="post" id="contact_form">
<fieldset>
<!-- Text input-->
<div class="form-group">
<div class="row">
<div class="col-md-4 col-lg-4">
<label class="control-label pull-right"><h4>First Name</h4></label>
</div>
<div class="col-md-4 col-lg-4 inputGroupContainer">
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-user"></i></span>
<input id="firstname" name="firstname" placeholder="First Name" class="form-control" type="text">
</div>
</div> …
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