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JavaScript Object-Oriented JavaScript (2015) Practice Project Question Prototype

Posted by Aditya Sandhu
Aditya Sandhu
3,406 Points

Could someone help me understand this line of code (from the video): return this.answer === choice;

Hi,

I'm a little confused with respect to this code: return this.answer === choice;

Does it first assign 'choice' to 'this.answer' and then return that? or does it first return 'this.answer' and then assign 'choice' to it? Or is it something altogether different? And in either case could anyone please explain why?

I'm sure this is something very basic, so apologies for asking, but I'm at an early stage of learning, and the video doesn't even have any explanation with respect to this line.

Thank you

1 Answer

Samuel Zhen
Samuel Zhen
33,571 Points
Samuel Zhen
Samuel Zhen
33,571 Points 
return this.answer === choice;

That line return true or false value from comparison between this.answer and choice;

Let's say this.answer = 1 and choice = 1 then that line will return true. If choice = '1' then that line will return false because === operator also check the type of the variable. So string 1 is not identical with integer 1.

Aditya Sandhu
Aditya Sandhu
3,406 Points

Got it. Thank you so much