javascript - how to make a list of attribute from a list of objects?
<p>i have a object list</p>

<pre><code>[A, A, A]
</code></pre>

<p>contains:</p>

<pre><code>A{a:1}
</code></pre>

<p>and how can I make a list for all the a in A's list</p>

<p>note: i dont hope for a copy of attributes' list, i wanna the list of attributes' themselves.</p>