Overwrite native javascript function: confirm()

Task

You want to overwrite the native javascript function “confirm()”

Create a javascript function and include it in your html page

function confirm(msg, callback) {
 ...
 }

Don’t do it like this:

window.confirm = function(msg, callback) {
 ...
 }

Why? Because IE will not allow overwriting of native functions. (Only tested with IE9)

You will loose the typical alert()/confirm() behaviour, where all events in the browser are stopped.
In other words: The confirm() dialogs don’t exclude each other any more. They are displayed at the same time, this is due to the asynchronus nature of javascript.
Workarounds:
- Use callback functions in your dialog handlers
- Use the “Ok”-Button of your dialog handler to call subsequent dialogs