How to restore console.log on a web page that overwrites it?

问题

Twitter’s website does something like

console.log = function () {};

to turn the browsers’ built-in console.log method into a no-op. Is there I way to restore the original function?

回答1:

Unless they also removed it in the prototype, getting the log method using getPrototypeOf() should work:

console.log = Object.getPrototypeOf(console).log;

Since using console.log = function() {} overrides, but doesn't remove the one defined in the prototype, you can delete the overriding method:

delete console.log

来源：https://stackoverflow.com/questions/32801652/how-to-restore-console-log-on-a-web-page-that-overwrites-it