How to implement reassignment using js

Below I will share with you an article about how a js native method is overwritten and the native method is reassigned. It has a good reference value and I hope it will be helpful to everyone.

Implementation Principle

# After the native method of js is overwritten, if you have not made the native method point to a new variable name again , then it’s gg. Therefore, the key is how to obtain the native method again. The principle of implementation is to create a new window object, and then obtain the native methods from the new window object to reassign values.

Use iframe implementation

First create an iframe object, use the document.createElement method to create

var iframe = document.createElement("iframe");
document.body.appendChild(iframe)

Then , get the window object in the iframe

var iframeWin = iframe.contentWindow;

Finally assign a value, you can

window.console = iframeWin.console;

Use the window.open method to achieve

window.open method call will open a new window and return a new window object, so we can get the window object like this

var win = window.open(); //获取对象
win.close(); //将打开的窗口关闭
window.console = win.console;

The above is what I compiled Everyone, I hope it will be helpful to everyone in the future.

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