无法执行已释放脚本中的代码 [英] Can't execute code from a freed script

问题描述

我有一个需要在其他框架中覆盖的功能.另外，我需要从重写中调用原始函数.为此，我正在使用以下内容:

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);
    };
})();

执行此代码时，显示无法从已释放的脚本执行代码".

When I execute this code, I get "Can't execute code from a freed script".

有什么想法吗?有一个更好的方法吗?在IE 6、7、8和9中进行测试.

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

推荐答案

我想出了解决方案.

基本上，您可以获取我之前发布的所有代码，并使用eval()函数在目标框架的上下文中执行该代码.所以...

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);};})();");

因为代码现在位于目标框架之内，所以它不会超出范围，并且我们也不会再收到已释放"错误.

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.

这篇关于无法执行已释放脚本中的代码的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！