javascript convert int to float

Question

I have a variable

var fval = 4;

now I want out put as 4.00

Alex Jasmin · Answer 1 · 2011-06-30T09:06:16.790

151

JavaScript only has a Number type that stores floating point values.

There is no int.

Edit:

If you want to format the number as a string with two digits after the decimal point use:

(4).toFixed(2)

edited Jun 30 '11 at 09:06

answered Oct 30 '10 at 06:12

Alex Jasmin

in php we have function number_format which adds floating points like that do we have any function in javascript – Rajesh Oct 30 '10 at 06:14
8

While this does what the question asked for, be careful using toFixed. toFixed returns a string, so if you try to add another number to it, it treats it as a string concatenation, not a number addition. – Jun 20 '12 at 15:31
@AaronGloege Is there a way to keep it as a "number"? – loveNoHate Dec 14 '13 at 22:49
3

@dollarvar No there isn't. The *number* type uses a binary floating point representation intended for calculation. It can't distinguish between 4 and 4.00. In fact it can't represent all decimal numbers accurately, but that's a whole nother story. – Alex Jasmin Dec 18 '13 at 06:10
Thanks, I found out though, that calculations with, eehm now I am confused how to call it, numbers with a point are unexactly, so there is no use too keep it as an "integer". ;) – loveNoHate Dec 18 '13 at 06:22
10

Use `parseFloat(val).toFixed(2);` and to keep it number permanently `parseFloat(parseFloat(value).toFixed(2));` – M.A.K. Ripon Nov 28 '15 at 07:54
@M.A.K.Ripon Thanks! Yours should be the accepted answer. – Omar Dulaimi Mar 28 '21 at 16:14

score 12 · Answer 2 · answered Sep 12 '18 at 07:02

12

toFixed() method formats a number using fixed-point notation. Read MDN Web Docs for full reference.

var fval = 4;

console.log(fval.toFixed(2)); // prints 4.00

answered Sep 12 '18 at 07:02

nkshio

2

YRW. And dont forget to clean up no longer required comments ;-) – GhostCat Sep 12 '18 at 09:13

score 0 · Answer 3 · edited Feb 15 '23 at 14:02

0

var fval = 4;
var fvalfloat = parseFloat(fval).fixed(2)

edited Feb 15 '23 at 14:02

Moritz Ringler

answered Feb 12 '23 at 19:34

Waleed Ghori

1

While this code may solve the question, [including an explanation](//meta.stackexchange.com/q/114762) of how and why this solves the problem would really help to improve the quality of your post, and probably result in more up-votes. Remember that you are answering the question for readers in the future, not just the person asking now. Please [edit] your answer to add explanations and give an indication of what limitations and assumptions apply. – Yunnosch Feb 13 '23 at 06:27

3 Answers3