ASP.NET AJAX Best Practices: Introduce function delegates

Take a look at the following loop. This loop calls a function in each iteration and the function does some stuffs. Can you think of any performance improvement idea?

for(var i=0; i<count; ++i)
    processElement(elements[i]);

Well, for sufficiently large array, function delegates may result in significant performance improvement to the loop.

var delegate = processElement;
    
for(var i=0; i<count; ++i)
    delegate(elements[i]);

The reason behind performance improvement is, JavaScript interpreter will use the function as local variable and will not lookup in its scope chain for the function body in each iteration.