jquery-validation
A jQuery plugin for easy client-side form validation with extensive customization options.
What is jquery-validation?
jQuery Validation Plugin is a JavaScript library that provides client-side form validation for web applications. It simplifies adding validation rules to HTML forms, ensuring user input meets specified criteria before submission. The plugin integrates seamlessly with jQuery and offers extensive customization options.
Frontend developers and web designers building interactive forms with jQuery who need reliable, customizable client-side validation.
Developers choose this plugin for its ease of integration, flexibility in defining custom validation rules, and strong focus on accessibility, making it a robust solution for form validation in jQuery-based projects.
Overview
jQuery Validation Plugin library sources
Use Cases
Best For
- Adding client-side validation to existing jQuery-based forms
- Implementing custom validation rules for complex form logic
- Improving form accessibility with ARIA attributes and screen reader support
- Ensuring HTML5-compliant validation patterns like email and required fields
- Transforming input values before validation using normalizer functions
- Integrating validation via module loaders like RequireJS in modular JavaScript applications
Not Ideal For
- Projects built with modern JavaScript frameworks like React, Vue, or Angular that have built-in or framework-specific validation solutions
- Applications requiring server-side validation as the primary security layer, where client-side validation alone is insufficient
- Teams seeking lightweight, dependency-free validation libraries to minimize bundle size and avoid jQuery overhead
- TypeScript-centric projects that prioritize type safety and may find the plugin's JavaScript-based API less integrated
Pros & Cons
Pros
With the `validate()` method, adding validation to existing forms requires minimal code, as shown in the README where including jQuery and the plugin enables instant validation.
Supports custom validation methods via `addMethod` and value transformation with the `normalizer` function, allowing developers to tailor validation logic to specific needs.
Configurable error output using `errorElement` and automatic ARIA attribute addition, such as `aria-describedby`, improves screen reader compatibility, detailed in the accessibility section.
Uses the same regular expressions as the HTML5 specification for built-in validations like email, ensuring consistency with browser standards and reducing compatibility issues.
Cons
Requires jQuery to function, adding an unnecessary library burden for projects not already using jQuery, which can increase load times and complexity.
Lacks built-in server-side validation integration, forcing developers to implement separate server-side checks for security and data integrity, which is a critical gap.
Setting up advanced custom rules and methods, such as using the `normalizer` for trimming, can be verbose and requires deep knowledge of the plugin's API, as seen in the examples.
The plugin has introduced breaking changes, like removing default white space trimming in version 1.14.0, which can break existing code and require manual updates using `normalizer`.
Frequently Asked Questions
Related Projects
jQuery.validationEnginejQuery form validation plugin
jQuery Form Validator[DISCONTINUED] jQuery plugin that makes it easy to validate user input while keeping your HTML markup clean from javascript code.
h5ValidateAn HTML5 form validation plugin for jQuery. Works on all major browsers, both new and old. Implements inline, realtime validation best practices (based on surveys and usability studies). Developed for production use in e-commerce. Currently in production with millions of users.
jQuery-form-validationjQuery library to validate html forms. compatible with bootstrap v4 and bootstrap v3
Found a gem we're missing?
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.