add new element at the beginning of a JSON
<p>I have this JSON:</p>

<pre><code>var myVar = {
     "9":"Automotive &amp; Industrial",
     "1":"Books",
     "7":"Clothing"
};
</code></pre>

<p>I want to add a new element at the beginning, I want to end up having this:</p>

<blockquote>
<pre><code>var myVar = {
     "5":"Electronics",
     "9":"Automotive &amp; Industrial",
     "1":"Books",
     "7":"Clothing"
};
</code></pre>
</blockquote>

<p>I tried this but it is not working:</p>

<pre><code>myVar.unshift({"5":"Electronics"});
</code></pre>

<p>Thanks!</p>
