Learn form validation in jQuery with this easy step-by-step tutorial. This complete guide to form validation in jQuery covers HTML5 validation, the jQuery Validate plugin, and ready-to-use code examples.
How to implement form validation in javascript/jquery
You landed on right page, Here I will teach you an easy way to implement form validation in javascript/jquery. Before we start I am hoping that you know well how to make form in html right? if yes then lets start what you need to make form validation. There are many ways to validate a form but here we are going to discuss only two main and super duper easy methods.
- How to validate using HTML – Super easy
- Using jQuery validating our form
How to implement form validation in HTML
I know you will skip this part but still i want to make you familiar with what is html :
HTML stands for Hyper Text Markup Language and it is the standard markup language for creating Web pages. It describes the structure of a Web page/Web Pages. The HTML consists of a series of elements and these HTML.
Now HTML has inbuilt feature for forms to validate itself by not adding any extra hustle. Its super duper easy . You just need to make the input fields required. Let me show you with an easy example.
Requirements to implement form validation in HTML:
- Bootstrap css for designing but still optional if you choose other methods to design you website.
I love using bootstrap it saves lot of time. Here is the html code to add form validation.
[code]
[/code]
How to implement form validation using jQuery
Now let talk about with more advance robust feature of JavaScript/jQuery to validate html form.
Requirements to implement form validation in jQuery:
- jQuery main js file
- jQuery validation js file
Its your choice to use cdn link for these files or to download files to your server. Here I’m giving you cdn links for the files
https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js
https://cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.19.5/jquery.validate.min.js
Steps :
- Include these two files in header
- Create a form and assign it an ID.
- in <script></script> tag use this id to validate your form fields.
- in head tag add a class to show error messages in red color->
.error{color: red;}
- Please follow the below example i have given with the form.
[code]
[/code]
Why Use Form Validation in jQuery?
Form validation in jQuery is popular because it is simple to implement and works in all browsers. Unlike plain JavaScript, form validation in jQuery needs less code thanks to the Validate plugin’s built-in rules. You get email checks, required fields, minimum lengths, and custom error messages with just a few lines. For modern projects, combine form validation in jQuery with HTML5 attributes for the best of both worlds.
Form Validation in jQuery FAQs
1. What is form validation in jQuery?
Form validation in jQuery means checking user input before submitting a form, using the jQuery library or the jQuery Validate plugin. With form validation in jQuery, you can show instant error messages without reloading the page.
2. Is the jQuery Validate plugin free?
Yes! The jQuery Validate plugin is free and open-source. Read the official jQuery Validation plugin documentation for all available rules and methods.
3. Should I use HTML5 or jQuery for form validation?
HTML5 validation is built-in and works without JavaScript, but form validation in jQuery gives you more control over error messages and styling. Many developers use both: HTML5 attributes for basic checks and form validation in jQuery for complex rules.
4. How do I validate forms on the server side too?
Client-side validation improves UX, but always validate on the server as well. If you use Laravel, see our Laravel 8 CRUD application tutorial which covers server-side validation in controllers.
5. How can I style my validated forms?
Use Bootstrap classes to style inputs, error messages, and buttons. Our Bootstrap 5 CSS framework guide shows how to build beautiful responsive forms. Once validated, you can submit form data via API – learn how in our Laravel API call tutorial.