How to display 00*** number in console?

Question

var a = 000077;

I would like to see in console.log(a) 000077. How is it possible to perform this?

Convert it to a string and then dynamically pad it, e.g. `a.toString(8).padStart(6, '0')`. — evolutionxbox, Oct 13 '16 at 15:40
As a note: as long as you do not use es5 or newer in strict mode then the number would be interpreted as octal when you prefix it with `0` see [MDN: Numbers](https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Numbers_and_dates) — t.niese, Oct 13 '16 at 15:44

score 0 · Answer 1 · answered Oct 13 '16 at 15:40

0

You could format the number as string with Number#toLocaleString.

var a = 77;

console.log(a.toLocaleString(undefined, { minimumIntegerDigits: 6, useGrouping: false }));

answered Oct 13 '16 at 15:40

Nina Scholz

score -1 · Answer 2 · answered Oct 13 '16 at 15:39

-1

instead of

var a = 000077;

make it a string

var a = "000077";

answered Oct 13 '16 at 15:39

sergio0983

toString() helps too. – Feathercrown Oct 13 '16 at 15:40
@Feathercrown Not in this case. `(000077).toString() === "63"`. That's because starting a number with `0` indicates an octal number. – Mike Cluck Oct 13 '16 at 15:41
Oh. Never mind then :3 – Feathercrown Oct 13 '16 at 15:41
Use the toString radix. – evolutionxbox Oct 13 '16 at 15:41
it´s treated as octal, so, won´t work – sergio0983 Oct 13 '16 at 15:42
hmmmm, that is annoying... why not try `000077.toString(8)` – evolutionxbox Oct 13 '16 at 15:42
Does a=a+"" work? – Feathercrown Oct 13 '16 at 15:42
@Feathercrown no, as `toString` is the first step in that – evolutionxbox Oct 13 '16 at 15:43
@Feathercrown `000077 === 63`. No matter what method you use to convert that to a string, it's underlying value is still `63`. – Mike Cluck Oct 13 '16 at 15:43
hmm.... that's very annoying. – Feathercrown Oct 13 '16 at 15:43
That's not annoying, that's how octal notation works. Mathematically speaking numbers cannot have leading 0s – Sterling Archer Oct 13 '16 at 15:45

2 Answers2