can't declare var a = 023; in js

Question

I want to declare

var a = 0213;
document.write(a);

but it not work .when console.log(a); variable different.

Judging by the leading zero, you are giving your number in octal, right? — Max Murphy, Oct 06 '15 at 17:59
That's an octal literal, remove the `0` in the start and it'll work. — Benjamin Gruenbaum, Oct 06 '15 at 17:59
If you can't leave off the leading `0`, you can do: Number(a.toString()) — Buzinas, Oct 06 '15 at 18:05

score 3 · Accepted Answer · answered Oct 06 '15 at 17:59

3

Numbers with a leading 0 are interpreted as octal (base 8).

Octal 0213 == decimal 139.

If you need the value 213 (decimal), leave off the leading 0.

answered Oct 06 '15 at 17:59

Paul Roub

1 Answers1