Client-side Form Input Validation with jQuery and Bootstrap

A simple lightweight JavaScript library that validates the form inputs and displays the error messages in the Bootstrap modal dialog.

How to use it:

1. Include the required Bootstrap framework on your web page.

<link rel="stylesheet" href="/path/to/cdn/bootstrap.min.css" />
<script src="/path/to/cdn/bootstrap.min.js"></script>

2. The Bootstrap modal component requires jQuery library to be loaded before the Bootstrap.js.

<script src="/path/to/cdn/jquery.slim.min.js"></script>

3. Include the validation.js after jQuery.

<script src="validation.js"></script>

4. Add Html5 data-* attributes to the form fields as follows.

• data-title: set the error messages.
• data-regex: set the password strength using REGEX.
• data-regex-title: set the error messages when using Regex.
• data-match: check passwords match.

<input type="text" 
       data-title="Please enter your name"
/>

<input type="password" 
       data-title="Password required" 
       data-regex="^[^\s]{6,20}$" 
       data-regex-title="Please a enter a password 6 - 20 characters in length"
/>

<input type="password" 
       data-title="Confirmation password required" 
       data-match="password" 
       data-match-title="Your password and confirmation password do not match"
/>

5. Add the simple-validation (error messages in a modal) or simple-validation-alert (error messages in a alert) to the HTML form element. Novalidate attribute is only in place to disable HTML5 validation

<form class="simple-validation" id="frmExample" novalidate>
  ... Form Fields Here
</form>

<form class="simple-validation-alert" id="frmExample" novalidate>
  ... Form Fields Here
</form>

Changelog:

v1.4.0 (2020-12-16)

• Added support for Bootstrap 4 and FontAwesome 5

2020-06-29

• Added dialog type.

2017-04-13

• Fixed issue where a select element would return a null value and trim would fail

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This awesome jQuery plugin is developed by GiancarloGomez. For more Advanced Usages, please check the demo page or visit the official website.