CODEWITHSUNDEEP
javascript
ceklock
ceklock

Reputation: 6352

Unexpected string when printing variable to console: [object Window]

I am trying to print text as binary value on console, but the result is "[object Window]".

console.log(toString(number, 2));

Upvotes: 0

Views: 289

Answers (2)

Azeirah
Azeirah

Reputation: 6338

toString is a method, not a function. Since calling functions in javascript calls them from the window object, you get [object Window]

console.log(number.toString(2));

will convert a number into binary.

ex: 

var num = 15;
console.log(num.toString(2));
> num = 1111;

Upvotes: 1

IMSoP
IMSoP

Reputation: 97718

Like most things in JS, toString is a method on the particular object, not a global function. See this MDN page, with examples.

So you want:

console.log(number.toString(2));

What is happening in your code is that it is liooking for some object to call toString on, and finding the "root object", which is window. So your code translates to this:

console.log(window.toString(number, 2));

Since window.toString doesn't take any arguments, they are ignored, meaning it's just like running this:

console.log(window.toString());

Upvotes: 2

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