Has anyone got any experience with overriding the alert() function in JavaScript? Which browsers support this? Which browser-versions support this? What are the dangers in overriding the function?...
Let's say you have the below code: function A() { function modify() { x = 300; y = 400; } var c = new C(); } function B() { function modify(){ x = 3000; y = 4000; } var c = new C(); } C = f...
How would I be able to override the XMLHttpRequest.open() method and then catch and alter it's arguments? I've already tried the proxy method but it didn't work, although removing the open over-rid when XMLHttpRequest() was called: (fu...
For example: (function() { var proxied = window.eval; window.eval = function() { return proxied.apply(this, arguments); }; })(); But this code is not working....
If a javascript function is declared anonymously is there any way to override it or portions of it? I am attempting to stop google.com's instant search from hijacking the up and down arrow keys to move through your search rankings. I have identi...
Lets say we have alert method of window object. I would like to enhance it with nice alertbox. Also I want to save the existing alert method so that we can switch back once our application is over. Something like this, but its throwing error in fir...
I have a JavaScript file, Mybasefile.js, which has the function Mybasefunction(). I want to override this function in another JavaScript file. When the function is called in a button click, I want the original Mybasefunction() to be executed along wi...
function Ninja(){ this.swingSword = function(){ return true; }; } // Should return false, but will be overridden Ninja.prototype.swingSword = function(){ return false; }; var ninja = new Ninja(); log( ninja.swingSword(), "Calling the...
I have a custom Javascript class (created using John Resig's Simple Javascript Inheritance). I want to be able to compare two instances of this class, using the ==, <, >, >=, and <= symbols. How do I override the comparators of my cu...
Are there ways where I can use jQuery to improve the performance of a file uploader? There's a system where I am trying to hack to make the uploading process better. I am just doing some frontend override as I don't have permission to their s...
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