将错误消息放入Bootstrap输入中

Question

我有一个PHP可以验证输入是否为空（如果显示的是错误消息），例如需要电子邮件，我正在为表单使用Bootstrap。 最初，该消息显示在输入下方（我不想要）。

目前使用的代码是：

<label>Number Of Rooms: </label>                                            
<input type="number" class="form-control input-sm" max="10" name="Rooms" value="<?php echo $RoomErr;?>">
<span class="error">* <br><?php echo $RoomErr;?></span>

这是网站网址的链接

我想在尝试将错误分配给输入值的文本输入中显示错误消息：

<label>Number Of Rooms: </label>                                            
<input type="number" class="form-control input-sm error" max="10" name="Rooms" value="<?php echo $RoomErr;?>">

以下无效。

我的CSS只是将错误分配为红色

.error{
color:red;
}

我找不到很多有关此的东西。

Answer 1

您可以尝试这样，因为它正在充当占位符。

 <input type="number" class="form-control input-sm error" max="10" name="Rooms" placeholder="<?php echo $RoomErr;?>">

Answer 2

请尝试这个。 我正在使用position：absolute; 并管理这个

 label { display: inline-block; margin-left: 20px; width: 135px; } .error { color: red; } .form-group .error { left: 165px; position: absolute; top: 5px; } .form-group{position:relative;} .form-inline .form-control{display: inline-block; vertical-align: middle; width: auto;} 

  <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> <div class="col-md-9"> <div class="container-form"> <p><span class="error">* required field.</span></p> <form id="EmailForm" class="form-horizontal" action="" method="post"> <div class="form-inline"> <div class="form-group" style="position: relative;"> <label for="first_name">Name: </label> <input class="form-control input-sm" name="first_name" type="text"> <span class="error">*Name is required</span> </div> </div> <div class="form-inline"> <div class="form-group"> <label for="last_name">SurnameName: </label> <input class="form-control input-sm" name="last_name" type="text"> <span class="error">*</span> </div> </div> <div class="form-inline"> <div class="form-group"> <label for="email">Email: </label> <input class="form-control input-sm" name="email" type="text"> <span class="error">* Email is required</span> </div> </div> <div class="form-inline"> <div class="form-group"> <label>Number Of Rooms: </label> <input class="form-control input-sm" max="10" name="Rooms" value="Mininum number of Hours : 3" type="number"> <span class="error">* Mininum number of Hours : 3</span> </div> </div> <div class="form-inline"> <div class="form-group"> <label> Number hours: </label> <input class="form-control input-sm" min="3" name="Hours" type="number"> <span class="error">* Mininum number of Hours : 3</span> </div> </div> <div class="form-inline"> <div class="form-group"> <label for="description">Description of the House: </label> <textarea name="description" rows="auto" class="form-control input-sm" cols="55"></textarea> <span class="error">* Description is required</span> </div> </div> <div class="form-inline"> <div class="form-group"> <div class="radio" style="margin-left:70px"> <input name="ironing" id="radiobtn" value="Yes" type="radio"> Yes </div> <div class="radio"> <input name="ironing" id="radiobtn" value="No" type="radio"> No </div> <span class="error">* Ironing is Required</span> <span class="help-block" style="margin-left:50px">Would Like Ironing?</span> </div> </div> <input class="btn btn-info btn-lg" name="submit" value="Submit" type="submit"> </form> </div> </div>