Question

I am loading up a framework (Microsoft AJAX Framework) along with Prototype and an autocomplete textbox. Both the framework and the autocomplete are adding behavior to some textboxes. I usually want both snippets to run, but not at all times. Basically, if an autocomplete item has been selected, I dont want the framework JS to run.

I thought I would try to overwrite the framework using a technique like this: Overriding a JavaScript function while referencing the original.

var original_doSomething = doSomething;
doSomething = function() 
{ 
    //do something *else* 
    if(something) original_doSomething();
}

However, the framework is a little clever and has been proving difficult to overwrite event handler is retaining the original function. I wrote a jsfiddle to mock the situation. http://jsfiddle.net/jeffrod/haHD4/2/

Is there anyway to overwrite dosomething so I can add my own logic to it??

Answer 1

Can you just change this function yourself:

$(function()
{
    var someObject = { 'a':'aaa' }
    $('input').keypress(createHandler(someObject,dosomething));
});

Or reassign the keypress handler yourself. That function is binding dosomething to the event before you have a chance to change dosomething yourself.