Clearing an array which is global context
<pre><code>var obj = {
  obj.arr1 = [],
  obj.arr2 = []
};
</code></pre>

<p>I have this object in the global context, now each time when i add a new user the <code>obj1.arr[]</code> is used for some manipulation. Now when i add another user, the value obj.arr1[] holds the previous data. </p>

<p>I tried using <code>obj.arr1=[];</code> but this does not work. I feel my object is in global context, how can i clear it. </p>
