Number to Float Conversion in JavaScript

Question

I want Conversion from Number to Float in JavaScript

function circumference(r) {
  return parseFloat(r);
}
console.log(circumference(4));

expected output: 4.00

Your code doesn't make sense. The function `parseFloat` expects a string, but you give it a number. Can you add a little bit of context so that we can understand what you _really_ want to achieve? — Roland Illig, Oct 10 '19 at 05:09
Possible duplicate of [How to format a float in javascript?](https://stackoverflow.com/questions/661562/how-to-format-a-float-in-javascript) — Charlie, Oct 10 '19 at 06:04

score 2 · Answer 1 · answered Oct 10 '19 at 05:08

2

You can use toFixed()

function financial(x) {
  return Number.parseFloat(x).toFixed(2);
}

console.log(financial(4));

answered Oct 10 '19 at 05:08

kyun

score 2 · Answer 2 · answered Oct 10 '19 at 05:09

2

Use Number.prototyp.toFixed() function. You can pass the number of decimal places as the argument.

function circumference(r) {
  return r.toFixed(2);
}
console.log(circumference(4));

answered Oct 10 '19 at 05:09

Charlie

score 1 · Answer 3 · answered Oct 10 '19 at 05:08

1

use parseFloat().toFixed() like this :

var number = parseFloat(4).toFixed(2);
console.log(number);

answered Oct 10 '19 at 05:08

Rio A.P

score 0 · Answer 4 · answered Oct 10 '19 at 05:24

0

There's a detailed explanation given on w3Schools with this link having the example to it.

var num = 5.56789;
var n = num.toFixed(2);
console.log(n);

Hope this helps.

answered Oct 10 '19 at 05:24

Jennis Vaishnav

4 Answers4