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JavaScript

Posted by Koosha Modabbernia
Koosha Modabbernia
7,098 Points

What goes in the "()" in the toUpperCase or toLowerCase property?

So far I learned, in all command with Parenthesis we put something in it, like console.log() and document.write(). but I don't get what should we put in toUppercase and toLowerCase property, if it's always should be empty why there is Parenthesis in the syntax.

Robert Richey
Robert Richey
Courses Plus Student 16,352 Points

Adding to what Chyno said, in the case of .toUpperCase() and .toLowerCase(), no arguments are passed in. When in doubt, check MDN - it's a great JavaScript reference.

1 Answer

Chyno Deluxe
Chyno Deluxe
16,936 Points

The parenthesis simply states that you are calling a method. Some methods require arguments and others don't.

function noArg() {
  alert("nothing here");
}

function twoArgs(arg1, arg2) {
  alert("Hello " + arg1 + " my name is " + arg2 + ".");
}

noArg(); //output: nothing here
twoArgs(); //Hello undefined my name is undefined.
twoArgs("Koosha", "Chyno Deluxe"); //Hello Koosha my name is Chyno Deluxe.

I hope this helps.