An attribute to restrict an element to a certain number of numeric digits.

It's a simple angularjs directive that restricts the user to only type numeric characters and limits the number of characters based on the value of the attribute.

Because it's such a small amount of code, it should be able to read and understand so you can even tweak it for your needs. In fact, I encourage it!

bower install angular-input-digits

Simply include the input-digits module

var app = angular.module('app', [ 'input-digits' ]);

Then use the digits attribute on your input elements

<input type="text" digits="4" ng-model="year" />

Note that the number of digits is specified as the value of the digits attribute, the type must be text and that ng-model is required.

This is particularly simple. If you're looking for something that does more (and the complexity that comes with it) check out: ngMask.

That's it!

Check out the github pages example here: http://deltreey.github.io/angular-input-digits/