Why is arr = [] faster than arr = new Array?
<p>I ran this code and got the below result. I curious to know why <code>[]</code> is faster?</p>

<pre><code>console.time('using[]')
for(var i=0; i&lt;200000; i++){var arr = []};
console.timeEnd('using[]')

console.time('using new')
for(var i=0; i&lt;200000; i++){var arr = new Array};
console.timeEnd('using new')
</code></pre>

<ul>
<li><strong><code>using[]</code>: 299ms</strong></li>
<li><strong><code>using new</code>: 363ms</strong></li>
</ul>

<p>Thanks to <a href="http://stackoverflow.com/users/419970/raynos">Raynos</a> here is a <a href="http://jsperf.com/literal-vs-new-23">benchmark</a> of this code and some more possible way to define a variable. </p>

<p><img src="http://i.stack.imgur.com/lVSwX.png" alt="enter image description here"></p>
