What it is all about...
Click the following button to create 50000 array items and 10000 nodes.
for(var i=0;i<jsArr.length;i++)
for(var i=jsArr.length;i>-1;i--)
for(var i=0,j=t.length;i<j;i++)
for(var i in t)
for(var i=0;t[i]!==undefined;i++)