<h1><code ng:non-bindable="">angular.isUndefined</code>
<span class="hint">(API in module <code ng:non-bindable="">ng</code>
)</span>
</h1>
<div><h2 id="Description">Description</h2>
<div class="description"><p>Determines if a reference is undefined.</p></div>
<h2 id="Usage">Usage</h2>
<div class="usage"><pre class="prettyprint linenums">angular.isUndefined(value);</pre>
<h3 id="Parameters">Parameters</h3>
<ul class="parameters"><li><code ng:non-bindable="">value – {*} – </code>
<p>Reference to check.</p></li>
</ul>
<h3 id="Returns">Returns</h3>
<div class="returns"><code ng:non-bindable="">{boolean}</code>
– <p>True if <code>value</code> is undefined.</p></div>
</div>
</div>
