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JavaScript JavaScript Foundations Strings Methods: Part 2

Roy Huang
Roy Huang
4,367 Points
Posted by Roy Huang
Roy Huang
4,367 Points

Parentheses for Methods?

Hello , I would like to know when do we need empty parentheses to invoke methods?

I learned in the video, it said that like .toLowerCase, we need empty parentheses; however ,like .length, we don't need parentheses.

I was confused: When do we need parentheses?

Thank you for your help.

1 Answer

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

you need parenthesis when invoking method calls. For example you need parenthesis when calling the toLowerCase() method. However length is a property of Strings, not a method, which is why you don't need parenthesis.

see the Mozilla docs on Strings for more information

Roy Huang
Roy Huang
4,367 Points
Roy Huang
Roy Huang
4,367 Points

Thank you for your prompt answer.

So they are different and I just got confused.

Thank you !