How can I format numbers in a specific way?

Question

I want to format my numbers and I want these results.

I have tried .toFixed(2) but it didn’t yield the expected results.

Input     Result
50.000 => 50
50.900 => 50.9
50.940 => 50.94
50.941 => 50.94

Something like 0.## as formatting but in JavaScript.

I think you're looking for something like this parseFloat(Math.round(num3 * 100) / 100).toFixed(2); which is explained in this post -> http://stackoverflow.com/questions/6134039/format-number-to-always-show-2-decimal-places — Robert, Nov 24 '15 at 19:48
Possible duplicate of [JavaScript: remove insignificant trailing zeros from a number?](http://stackoverflow.com/questions/3612744/javascript-remove-insignificant-trailing-zeros-from-a-number) — isherwood, Nov 24 '15 at 19:49

indubitablee · Accepted Answer · 2015-11-24T19:57:13.160

function decimalFunction() {
  console.log('click');
  var myvalue = document.getElementById('myInput').value;
  var decimal = Math.round(myvalue * 100) / 100
  document.getElementById('result').innerHTML  = decimal;
}

<input id="myInput" type="text"/>
<button onclick="decimalFunction()">Submit</button>
<div id="result"></div>

Math.round(inputNumber * 100) / 100

Input: 50.000, 50.900, 50.940, 50.941

Output: 50, 50.9, 50.94, 50.94

score 1 · Answer 2 · answered Nov 24 '15 at 19:53

1

You should be able to use

parseFloat(num.toFixed(2));

to

have a maximum of two trailing digits
omit any superfluous trailing zeros

answered Nov 24 '15 at 19:53

m90

11,434
13
62
112

your answer is also correct, sorry but I cannot flag two answer as right answer, only +1 :( – Reza Nov 24 '15 at 20:04

score 0 · Answer 3 · answered Nov 24 '15 at 20:00

0

change you number to string. After some string operations you can get correct result

<script language="Javascript">
    var data = 50.947;
    var res = data.toString().substring(0, data.toString().indexOf('.') + 3);
    alert(res);
</script>

answered Nov 24 '15 at 20:00

Ramin Darvishov

1,043
1
15
30

How can I format numbers in a specific way?

3 Answers3