Always display at least two decimal places

Question

I want to format a number so that it always have at least two decimal places.

Samples:

Output:

@DavidBarker The question you linked takes 2 decimals regardless if there is more, this is not what the op asked. — Patsy Issa, Dec 09 '13 at 15:15
You can look at this question as a response: http://stackoverflow.com/questions/1068284/format-numbers-in-javascript — Bura Chuhadar, Dec 09 '13 at 15:18

score 21 · Accepted Answer · answered Dec 09 '13 at 15:17

21

You could fix to 2 or the count of current places;

 var result = num.toFixed(Math.max(2, (num.toString().split('.')[1] || []).length));

answered Dec 09 '13 at 15:17

Alex K.

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score 11 · Answer 2 · answered Nov 29 '19 at 16:11

11

How about using Intl :

Intl.NumberFormat(navigator.language, {
  minimumFractionDigits: 2,
  maximumFractionDigits: 10,
}).format(num)

answered Nov 29 '19 at 16:11

skube

5,867
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Ringo · Answer 3 · 2013-12-09T15:22:58.443

0

Try this:

var num = 1.2;
function decimalPlaces(num) {
  var match = (''+num).match(/(?:\.(\d+))?(?:[eE]([+-]?\d+))?$/);
  if (!match) { return 0; }
  return Math.max(
       0,
       // Number of digits right of decimal point.
       (match[1] ? match[1].length : 0)
       // Adjust for scientific notation.
       - (match[2] ? +match[2] : 0));
}
if(decimalPlaces(num) < 2){
   num = num.toFixed(2);
}
alert(num);

Here is jsfiddle

edited Dec 09 '13 at 15:22

answered Dec 09 '13 at 15:15

Ringo

3,795
3
22
37

1

Output is `1.23` , I would want `1.2345` – skmasq Dec 09 '13 at 15:17
Please try it again! Sorry about my mistake. – Ringo Dec 09 '13 at 15:23

score 0 · Answer 4 · answered Dec 09 '13 at 15:32

0

Try this solution (working),

var a= 1,
    b= 2.1,
    c = 123.456,
    d = 234.45;

console.log(a.toFixed(4).replace(/0{0,2}$/, ""));
console.log(b.toFixed(4).replace(/0{0,2}$/, ""));
console.log(c.toFixed(4).replace(/0{0,2}$/, ""));
console.log(d.toFixed(4).replace(/0{0,2}$/, ""));

If you have more decimal places, you can updated the number easily.

answered Dec 09 '13 at 15:32

Sajad Deyargaroo

1,149
1
7
20

This is maximum 4 decimal places, this doesn't solve the issue. – skmasq Dec 09 '13 at 17:43
Please see the last line in the answer. You can change this to any number of decimal places eg. `c.toFixed(10).replace(/0{0,8}$/, "")` First number is the max decimal places that we can have (10 in this case) and second number is max-min (8 in this case). – Sajad Deyargaroo Dec 09 '13 at 17:59
2

Alex K. answer is better because it doesn't set maximum decimal places. – skmasq Dec 09 '13 at 19:07

Always display at least two decimal places

4 Answers4

Linked