Javascript add same property to all objects in array
<p>I am working in node without angular or underscore and am looking for an efficient plain javascript answer (perhaps avoiding loops).  I have the following array of JSON objects:</p>

<pre><code>object = [
    {account:2423, user:1564},
    {account:1235, user:1564}
]
</code></pre>

<p>I want to add the following to each array within the object:</p>

<pre><code>username:"clientname" 
</code></pre>

<p>So that it looks like this in the end:</p>

<pre><code>object = [
    {account:2423, user:1564, username:"clientname"},
    {account:1235, user:1564, username:"clientname"}
]
</code></pre>

<p>This question requests the avoidance of loops.</p>