call future javascript function compatibility on all browsers?
<p>let say i have function like below</p>

<pre><code>function doSomethingNow(){

  callSomethingInFutureNotExistNow();
}
</code></pre>

<p>at the moment doSometingNow() is created callSomethingInFutureNotExistNow() not exist yet. It will be created in the future, on firefox, this doesn't show any error on firebug.  Will these kind of function compatible on all browsers without throwing errors ?</p>
