The decimal part after the comma is ignored in floating point number parsing JavaScript

Question

Here is a simple scenario. I want to display the subtraction of two values ​​on my website:

//The value on my website is: "75,00"
var fullcost = parseFloat($("#fullcost").text());

//The value on my website is: "0,03"
var auctioncost = parseFloat($("#auctioncost").text());

alert(fullcost); //Output: 75
alert(auctioncost); //Output: 0

Can anyone tell me what I'm doing wrong?

Answer 1

The parseFloat function of javascript does not accept regional parameters. So you need to replace , with .

parseFloat('0,04'.replace(/,/, '.')); // 0.04

Answer 2

This is "By Design". parseFloat The function only considers parts of the string until it encounters a non- , -, number, exponent, or decimal point. Once it sees the comma, it stops looking and only considers the "75" part.

• https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/parseFloat

To fix this problem, convert commas to decimal points.

var fullcost = parseFloat($("#fullcost").text().replace(',', '.'));