What is typeof keyword mean in JS?

Hi freeCodeCamp forum users. I’ve learned about the basics of JavaScript.

But, what does the typeof keyword mean in JS? And what does it means??

I don’t know how to use the typeof keyword, like this:

console.log(typeof null);
var aNumber = 5;
console.log(typeof aNumber);

Please answer. :smiley:

Thank you!
Pummarin :slight_smile:

Well what does it log for those two values?