Can I check on what an integer ends in Javascript

Question

I want to remove the decimals after a price if it ends on ',00'. If it ends on anything else it should remain. I'll have to be able to see on what the price ends to do so, but how do I achieve this in Javascript?

My idea was checking if the price ended on 00 and removing it in an if statement.

function gformFormatMoney(text, isNumeric){ 
if(!gf_global.gf_currency_config)
return text;

var currency = new Currency(gf_global.gf_currency_config);
var unformatted = currency.toMoney(text, isNumeric);
var formatted;
var formatting = unformatted%10;
if(formatting == 00) {

} 

return unformatted;
}

^This gives a error 'Octal litterals with the prefix 0 are not allowed'

An `int` has 0 decimals. You probably mean a `float` or `double` — flx, Mar 06 '19 at 11:12
Possible duplicate of [Get decimal portion of a number with JavaScript](https://stackoverflow.com/questions/4512306/get-decimal-portion-of-a-number-with-javascript) — noetix, Mar 06 '19 at 11:12
convert the integer to string and check the last 2 indexes using indexof(). and convert it back to integer — Shyam Kumar, Mar 06 '19 at 11:12

arielb · Answer 1 · 2019-03-06T11:35:58.883

1

You should use toFixed.

as for :

let num = 50.00;
num.toFixed(2).includes('.00') ? num.toFixed() :num.toFixed(2);

edited Mar 06 '19 at 11:35

answered Mar 06 '19 at 11:16

arielb

392
3
10

1

What about `40.40` returning `40.4`? – noetix Mar 06 '19 at 11:17
Right, I have fixed my answer. but this is only for the display of the number, at the end it is the same number arithmetically. – arielb Mar 06 '19 at 11:36

score 1 · Answer 2 · answered Mar 06 '19 at 11:23

You need to parse your numbers as a float, fix it to 2 decimals (in all cases), and remove any matches for (.00). Something like this could work:

function fixFloat(num){
  return parseFloat(num).toFixed(2).replace('.00', '');
}

console.log(fixFloat(20.00));
console.log(fixFloat(40.40));
console.log(fixFloat(30.01));

Please be aware that this will return a string. If you wish to convert this back to a number, you'll need to parse it again.

score 0 · Answer 3 · answered Mar 06 '19 at 11:13

0

If the data type is not string , the trailing zeros after decimal will be removed. If it is a string use parseInt to convert to number

let price = 20.00;
console.log(price)

let price1 = '40.00'
console.log(parseInt(price1, 10))

let price2 = '40.00'
console.log(parseFloat(price2, 10))

answered Mar 06 '19 at 11:13

brk

48,835
10
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78

Should've added this to the question, but I tried this and it didn't show the prices in the frontend – Scott van Duin Mar 06 '19 at 11:24

score 0 · Accepted Answer · answered Mar 06 '19 at 13:49

Turns out it wasn't an integer, but a string.

I fixed it by doing:

function gformFormatMoney(text, isNumeric){
if(!gf_global.gf_currency_config)
    return text;

var currency = new Currency(gf_global.gf_currency_config);
var unformatted = currency.toMoney(text, isNumeric);
var formatted = unformatted.replace(',00', '');

return formatted;
}

Can I check on what an integer ends in Javascript

4 Answers4