append single quotes to characters
<p>I have a string like </p>

<pre><code>var test = "1,2,3,4";
</code></pre>

<p>I need to append single quotes (<code>' '</code>) to all characters of this string like this:</p>

<pre><code>var NewString = " '1','2','3','4' ";
</code></pre>

<p>Please give me any suggestion.</p>
