Uncaught TypeError: Property 'open' of object [object DOMWindow] is not a function

Question

This is my code:

function loadOffer(id) {
    window.open("http://www.google.com.com","mywindow");
}

It's initiated onClick. However I get the following error:

Uncaught TypeError: Property 'open' of object [object DOMWindow] is not a function

Any ideas?

Answer 1

You've defined a global variable somewhere called open and it's not a function. It's overridden the normal function of window.open.

Yet another good reason to namespace our javascripts.

Answer 2

Under normal circumstances, window.open is a function. So you've probably changed it somewhere else in the code, most likely by defining a variable open without a var statement.

> window.open
function open() { [native code] }
> open = "test"
"test"
> window.open
"test"