js-validation

Lightweight, zero-dependency vanilla JavaScript form validation library inspired by jquery-validation.

• No dependencies – pure vanilla JavaScript
• Familiar API inspired by jquery-validation
• Built-in rules: required, email, minlength, maxlength, pattern, equalTo, numeric, url, date, dateISO
• Custom rules via addMethod()
• Tree-shakeable ES module imports
• Configurable error classes and error elements
• Accessible – sets aria-invalid and invalid attributes

Documentation