Javascript: Round Up to the Next Tens Place

Question

I have a javascript formula that rounds off the input number number.

var number = x;

alert (Math.round(number / 10) * 10);

This will output 11,12,13,14 as 10 and 15,16,17 as 20.

This is not what I want; I want to add 1 to 10 (11) and round it up, which will return/print 20.

Example:

Possible duplicate of [How to round up a number in Javascript?](http://stackoverflow.com/questions/5191088/how-to-round-up-a-number-in-javascript) — DrunkWolf, Oct 06 '15 at 13:27
http://stackoverflow.com/questions/18953384/javascript-round-up-to-the-next-multiple-of-5 — epascarello, Oct 06 '15 at 13:28

score 5 · Accepted Answer · edited Oct 06 '15 at 13:25

5

I think you could use Math.ceil instead of Math.round.

edited Oct 06 '15 at 13:25

Matt Harrison

answered Oct 06 '15 at 13:25

OliverRadini

Addison Crump · Answer 2 · 2015-10-06T13:28:58.660

2

If what I'm interpreting your question as is indeed what you're asking, then you want Math.ceil instead.

This will equate to the ceiling of the function ("rounded up", if you will)

Therefore, your code becomes:

var number = x;

alert (Math.ceil(number / 10) * 10);

edited Oct 06 '15 at 13:28

answered Oct 06 '15 at 13:27

Addison Crump

Man. I thought I posted this early. Didn't see the other answer. – Addison Crump Oct 06 '15 at 13:27
Yeah, for some reason it reverted (accidental ctrl-z?). Fixed it. – Addison Crump Oct 06 '15 at 13:29

2 Answers2