Question

I’ve made an experiment in JavaScript:

var x=[  "1","2","3","4","5","6"];

c=(b = x)[2] ;   //<--- what is this syntax?

alert(b ); // 1,2,3,4,5,6

alert(c ); // 3 

I figured it out how it works. It saves me a line of equalization. Still, I was wondering about this strange syntax. How is it called and where can I read about it?

Answer 1

= operator returns a value being assigned so (b = x) returns value of x. That results in x[2] being assigned to c.

(note: “returns x” changed to “returns value of x” according to comments)