Why does javascript accept commas in if statements?

Question

I stumbled across some javascript syntax that seemed like it should produce a parse error of some kind but doesn\'t:

if (true, true) {console.log(\'splendid         


        

Answer 1

commas in javascript are actually pretty arcane. The coolest use I have seen is this

while(doSomething(), checkIfSomethingHappened());

the most common would be the way var is used in modern js

var foo = 1,
    bar = 2;