Javascript : Rounding 2 decimal places of boundary 0.5

Question

How to get the rounding number of 0.5, previously I found in this link:

Click here

But this is not what I want:

I want like this example:

10.24 = 10.25
17.90 = 17.90
3.89 = 3.90
7.63 = 7.65

jQuery will be fine with me.

Multiply by 20, round, then divide by 20 – Axel Guilmin Jun 30 '15 at 13:46 — Axel Guilmin, Jun 30 '15 at 13:46
Multiple by 20, in fact, then divide by 20. – rghome Jun 30 '15 at 13:47 — rghome, Jun 30 '15 at 13:47

score 6 · Accepted Answer · edited Jun 30 '15 at 13:37

6

Use Math.round(num * 20) / 20, if you are looking to round a number to nearest 0.05.

edited Jun 30 '15 at 13:37

DontVoteMeDown

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answered Jun 30 '15 at 13:36

Teja Reddy

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Great hack with likely minimal operations. – TaoPR Jun 30 '15 at 13:44

score 3 · Answer 2 · answered Jun 30 '15 at 13:37

This will do what you need...

function roundoff(value) {
    return (Math.round(value / 0.05) * 0.05).toFixed(2);
}

Using Math.round will round the value to the nearest 0.05, and then using toFixed(2) will ensure the result has 2 decimal places, even if they're both zeros.

Here's a working example...

http://jsfiddle.net/xoo7c898/

Javascript : Rounding 2 decimal places of boundary 0.5

2 Answers2

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