[FIXED] What is this python tuple-like syntax in Javascript actually doing?

Issue

What is going on in this Javascript code? Is there a name for this or some place to learn more about the specific behavior illustrated?

I didn't think coding a "tuple" in JS would be valid syntax, but it seems to be. However the resulting variable definitely doesn't behave as a tuple, which is expected given JS's lack of support for them.

It's behavior seems very odd to me though.

It only gets 1 of the two values stored into it, and strangely removing the parenthesis is still valid javascript but ends up storing the opposite value into the varible

-> x = (90, 27);
<- 27
-> x
<- 27

-> x = 90, 27;
<- 27
-> x
<- 90

Solution

Comma operator returns the last element

No tuples in JavaScript

Answered By - Konrad

Answer Checked By - Pedro (PHPFixing Volunteer)