how to check a string is empty in angularjs
<p>I am checking a value in my controller.Here is my code.</p>

<pre><code>var contents = atob(response.documents);
// I checked the value in contents . it is displaying ""
if(contents === ""){
 // no contents
}
</code></pre>

<p>the if condition is retuning false, when the contents has "" and when the contents has data.
How to check condition?</p>