Why is console.log an empty function on some sites in Chrome?

Question

Go to Twitter\'s login page and type the following in the console:

window.addEventListener(\'keypress\', function(e){console.log(\'hello\')}, true)

Answer 1

Because those sites have specifically set (for webkit apparently):

console.log = function(){};

However, in Chrome you can restore the original log() functionality by issuing this command in console:

console.log = console.__proto__.log

Then you can do this:

window.addEventListener('keypress', function(e){console.log('hello')}, true)

And it should work as expected.