rickharrison/validate.js

rickharrison/validate.js has 2,540 GitHub stars and 393 forks. GitHot measured 0 stars in 24 hours. Last checked 2026-11-07 20:48 UTC. Last push 2020-03-02.

How these counts are measured

Lightweight JavaScript form validation library inspired by CodeIgniter.

2,540 stars 393 forks

What you can do

Validate form fields from over a dozen rules
No dependencies
Customizable Messages
Supply your own validation callbacks for custom rules

Measured star growth

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README.md

Original

validate.js

validate.js is a lightweight JavaScript form validation library inspired by CodeIgniter.

Features

Validate form fields from over a dozen rules
No dependencies
Customizable Messages
Supply your own validation callbacks for custom rules
Chainable customization methods for ease of declaration
Works in all major browsers, (even IE6!)
Modeled off the CodeIgniter form validation API

How to use

    var validator = new FormValidator('example_form', [{
        name: 'req',
        display: 'required',
        rules: 'required'
    }, {
        name: 'alphanumeric',
        rules: 'alpha_numeric'
    }, {
        name: 'password',
        rules: 'required'
    }, {
        name: 'password_confirm',
        display: 'password confirmation',
        rules: 'required|matches[password]'
    }, {
        name: 'email',
        rules: 'valid_email'
    }, {
        name: 'minlength',
        display: 'min length',
        rules: 'min_length[8]'
    }, {
        names: ['fname', 'lname'],
        rules: 'required|alpha'
    }], function(errors) {
        if (errors.length > 0) {
            // Show the errors
        }
    });