angular.isArray()

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.1/angular.min.js"></script>
<h1 id="test">angular.isArray()</h1>

JavaScript

var array = [];
console.log(angular.isArray(array));  //  true
document.write("This is an array");

var string = '';
console.log(angular.isArray(string));  // false