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JavaScript

I am a bit confused

var mySet = new Set();
mySet.add('foo');

mySet.delete('bar'); // Returns false. No "bar" element found to be deleted.
mySet.delete('foo'); // Returns true.  Successfully removed.

mySet.has('foo');    // Returns false. The "foo" element is no longer present.

What does var mySet = new Set(); mean?

1 Answer

Steven Parker
Steven Parker
229,968 Points

It creates a new, empty set object in the variable mySet.

It's necessary to be able to call the .add method to give it items.

Thank you again Steven, you are always here for me and you are so kind, I hope everything in your life goes as expected.