tc39/proposal-logical-assignment

Is assigned expression always evaluated even if not needed?

yukulele opened this issue · 3 comments

yukulele commented

in this example:

let a = 0;
let b = true;
b = b || a++;
console.log(a); // 0

a++ is not evaluated.

in this case:

let a = 0;
let b = true;
b ||= a++;
console.log(a); // ?

should a++ be executed?

jridgewell commented

No, a will be 0.