Angular-Validator is an easy to use, powerful and lightweight AngularJS validation directive.

Description:

Validate using REGEX, required, or custom validation functions
Validates elements on submit with option to validate individual elements on blur or dirty as well.
Prevents submission if the form is invalid
Adds validation error/success messages as sibling elements
Adds .has-error classes to invalid elements
Adds .has-error classes to validation message
Supports multi-field dependent validation (one field depends on another such as password matching)
Works with or without novalidate
Works with Bootstrap out of the box (although Bootstrap is not required)