Display decimal 2 places if float, and display decimal 0 places if int

Question

I know how to do decimal 2 places.

use toFixed(2); but the problem is all of number in list is always 2 decimal places.

I want to if fraction use decimal 2 places, if non fraction use decimal 0 places.

number     display
------     -------
1          1
3          3
1.341      1.34
1.345555   1.35
2          2

Check if the number is an integer or float, if float apply the toFixed(2) — EugenSunic, Nov 08 '15 at 08:41

score 2 · Accepted Answer · answered Nov 08 '15 at 08:44

2

Try this

function isInt(n) {
       return n % 1 === 0;

    }
    var num=3.00;
    if (isInt(num)){alert(num);}
    else{alert(num.toFixed(2));}

answered Nov 08 '15 at 08:44

EugenSunic

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I think this is the perfect use case for a ternary operator : `alert(isInt(num) ? num : num.toFixed(2))` – Aaron Nov 08 '15 at 08:46
You are right, but I love brackets, still have nightmares from python syntax.. – EugenSunic Nov 08 '15 at 08:49

mplungjan · Answer 2 · 2015-11-08T08:53:52.263

1

function show(num) { // test for int is from duplicate question
  return (num % 1 === 0)?num:num.toFixed(2);
}

var nums = [1,3,1.341,1.345555,2],div=document.getElementById("res");
for (var i=0;i<nums.length;i++) {
  res.innerHTML+='<br/>'+show(nums[i]);
}

<div id="res"></div>

edited Nov 08 '15 at 08:53

answered Nov 08 '15 at 08:47

mplungjan

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Display decimal 2 places if float, and display decimal 0 places if int

2 Answers2