You can checkout the full article on Scotch: Password Strength Meter in AngularJS.
This project contains a demo showing how to use the zxcvbn Javascript library in an AngularJS application. An intermediate knowledge of the AngularJS framework is required for complete understanding of the demo code. You can checkout the docs to learn more about AngularJS.
Before you begin, make sure you have the Bower package manager installed in your system. If you don't already have Bower in your system, you can follow the Bower Installation Guide.
You can also get a live demo on jsFiddle.