javascript简单的数学问题

Question

I have a simple math problem in javascript that I can't solve.

var prodajna_avg = parseFloat(vpc - (vpc * (rab_avg / 100))).toFixed(2);
var nabavna = parseFloat(<?php echo "$nabavna_cijena"; ?>);
document.getElementById("brutto_avg").textContent = parseFloat(prodajna_avg - nabavna);

Problem is in line three. I don't get the correct amount and I don't know why. In first row amount is 5.624,17 and second row is 3.904,54. Third row is returning 5.620,19 for some reason, while it should be 1.719,63.

Can you help me? I'm learning javascript that's why it's a problem for me.

Thanks.

Answer 1

Make sure that $nabavna_cijena is correctly formatted.

var nabavna = parseFloat("3.904,54");  // --> nabavna == 3.904
var nabavna = parseFloat("3,904.54");  // --> nabavna == 3
var nabavna = parseFloat("3904.54");   // --> nabavna == 3904.54

The function parseFloat() requires that the decimal point is . and it does not allow a group separator.