[英]How to add 'required' to the input field base on paragraph class using JQuery or Javascript?
[英]In html input label * add detect to required field using JavaScript/jQuery
我有多個輸入形式,但需要 * 添加到 label,而不是使用 javascript 手動添加
<label for="form_name">Firstname</label>
<input id="form_name" type="text" name="name" class="form-control" placeholder="Firstname" required="">
首先添加一個 CSS class 然后將其添加到您的輸入
$('input[required]').each(function(){ $($(this).parent()).find('label').addClass('required') //depending on the structure of your fields });
.required:after{ color:red; content:" * "; }
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <label for="form_name">First name</label> <input id="form_name" type="text" name="name" class="form-control" placeholder="First name" required="">
反轉元素的順序(並使用 CSS 更正定位),這允許使用相鄰的兄弟組合符+
:
.form-group { display: grid; grid-template-areas: "label" "input"; }:required+label::after { content: " *"; color: teal; }.form-group label { grid-area: label; }.form-group.form-control { grid-area: input; }
<div class="form-group"> <input id="form_name" type="text" name="name" class="form-control" placeholder="Firstname" required=""> <label for="form_name">Firstname</label> </div>
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