I have a script which cannot count on its window.Array object to not have been overridden. (It might have been changed by another script that was loaded before).
I create a new iframe and I would like to set the window.Array object back to the native Array prototype
// let's assume Array.prototype.filter function was changed by another script
Array.prototype.filter = ()=>{return "haha!"}
console.log('test overridden: ', new Array(1,2,3).filter(x=>x));
console.log('test overridden literal:', [1,2,3].filter(x=>x));
// prints test overridden: haha
// prints test overridden literal: haha
// get new window with native code from iframe
var iframe = null;
(iframe = document.createElement('iframe')).name = 'native_function';
document.body.appendChild(iframe);
var native = window.frames['native_function'];
// here I am trying to set my broken Array to a new fresh copy
Object.setPrototypeOf(Array, native.Array.prototype);
console.log('test restored filter: ', new Array(1,2,3).filter(x=>x));
console.log('test restored literal array filter', [1,2,3].filter(x=>x));
// prints test restored filter: haha
// prints test restored literal array filter: haha
// It didn't work.
如何将我的window.Array还原到native.window.Array？