Javascript Leading 0 on Integers Wrong Value

Question

Javascript leading 0 on integers getting wrong value on console.log. Why I am getting like this ?

Code:

console.log(456);
console.log(0456);

Output:

456
302

leading `0` tells JS engine that it is an octal number. – gurvinder372 Dec 15 '17 at 10:04 — gurvinder372, Dec 15 '17 at 10:04
Duplicate of https://stackoverflow.com/q/21036122/8813684 – Naresh Kumar Dec 15 '17 at 10:06 — Naresh Kumar, Dec 15 '17 at 10:06

score 2 · Accepted Answer · answered Dec 15 '17 at 10:04

2

Because JS "translates" 0456 as an octal value, since it has a trailing zero and all its digits < 8.

answered Dec 15 '17 at 10:04

Andrea

octal for 0456 is 710 ? http://www.binaryhexconverter.com/decimal-to-octal-converter – Şivā SankĂr Dec 15 '17 at 10:09
@ŞivāSankĂr It's obvious that you should do an octal to decimal conversion, not the opposite. – Andrea Dec 15 '17 at 10:14

1 Answers1