如何在覆盖它的网页上恢复console.log？

Question

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?

Answer 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