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JavaScript

Posted by Matthias Nörr
Matthias Nörr
8,614 Points

"Useful Array Methods": Why does the teacher use the .join() - method?

Could we not just write:

print(inStock);

The .join() - method seems not needed?!

2 Answers

Michael Davis
Michael Davis
Courses Plus Student 12,508 Points 
var myPets = ["dog", "cat", "hamster", "fish"];

print(myPets);  // This prints "dog,cat,hamster,fish"

print(myPets.join(", ")); // This prints "dog, cat, hamster, fish"

Hope that helps :-)

Matthias Nörr
Matthias Nörr
8,614 Points

Thanks. So it is just more user friendly and reads better?!

Michael Davis
Michael Davis
Courses Plus Student 12,508 Points

Essentially yes. The .join() method could be used with anything.

Example:

myPets.join(", and a ");
// Results in "dog, and a cat, and a hamster, and a fish"

myPets.join("[my separator here]");
// Results in "dog[my separator here]cat[my separator here]hamster[my separator here]fish"
Matthias Nörr
Matthias Nörr
8,614 Points
Matthias Nörr
Matthias Nörr
8,614 Points

Cool. Thanks!