Question

I have a function that in a different frame that I need to override. In addition, I need to call the original function from within my override. To do so, I’m using the following:

myFrame.SomeFunction = (function () {
    var originalSomeFunction = myFrame.SomeFunction;

    return function(arg1, arg2, arg3) {
        alert('In override!');
        originalSomeFunction(arg1, arg2, arg3);
    };
})();

When I execute this code, I get “Can’t execute code from a freed script”.

Thoughts? Is there a better way to do this? Testing in IE 6,7,8 and 9.

Answer 1

I figured out the solution.

Basically, you take all of the code I previously posted, and the execute it from within the context of the target frame using the eval() function. So…

myFrame.eval("SomeFunction = (function () {var originalSomeFunction = SomeFunction; return function (arg1, arg2, arg2) {alert('Inside override!'); originalSomeFunction(arg1, arg2, arg3);};})();");

Because the code is now within the target frame, it doesn’t go out of scope, and we don’t get the “freed” error anymore.