javascript - Illegal Invocation error when console.log passed in a function

Question

I am bit confused over this. Please find the code as below.

var o={
 printToConsole: function(f){
   f(1);
}
};

o.printToConsole(console.log);

//TypeError: Illegal invocation// I get a TypeError

From the definition of console.log we get this

`function log() { [native code] }`

In chrome, which clearly displays that it doesn't take any argument, though when we try to print things on console we do write like this i.e. pass the argument to console.log.

console.log('Take me on Console');

Why I am getting this TypeError and how this console.log behaves in chrome?

Answer 1

Change

o.printToConsole(console.log);

to

o.printToConsole(console.log.bind(console));

or

o.printToConsole(function(){ console.log.apply(console.log, arguments) });

The console.log function only works when the receiver (this) is the console (in fact, it's browser dependent).