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JavaScript

Juneau Lim
Juneau Lim
13,362 Points
Posted by Juneau Lim
Juneau Lim
13,362 Points

When do you use () when calling a method and when you don't?

It's a bit confusing. :-( When can I omit / or should omit parentheses and when not?

2 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

You always put parentheses after a method name to call the method.

The only time you're likely to use a function/method name without the parentheses is to pass it as a callback to another function.

Juneau Lim
Juneau Lim
13,362 Points
Juneau Lim
Juneau Lim
13,362 Points

Thank you. That makes sense. When I googled it, the autocomplete was javascript callback hell. Hilarious.

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

You always use () to invoke a function. Without () the function definition is returned.

Juneau Lim
Juneau Lim
13,362 Points
Juneau Lim
Juneau Lim
13,362 Points

Now I am studying OOP part, and when it is said that when I use setter/getter, I am making ones with the same name and call it just as if they are a parameter, without ().

I also have learned a little bit of Vue.js, and I remember that sometimes I call methods without (), but can't remember what I did it for.

It that the only case of getter/setter?