Angular: Empty Fiddle

http://angularjs.org/

by CriddleCraddle

HTML

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.13/angular.min.js"></script>
<div ng-app="myApp">
    <form name="myForm">
        <div ng-controller="MyCtrl">
            <br>
            <label>Input #1</label>
            <br>
            <input ng-model="field.myName" name='myName' ng-minlength="{{ min_length }}" />

CSS

input.ng-invalid {
    border: 3px solid red !important;
}

JavaScript

var app = angular.module('myApp', []);

app.controller('MyCtrl', function ($scope) {
    $scope.min_length = 4;
});