Division between integer and real number returns Nan

Question

I’m afraid the integer values (example 350) and a real number (example 3.50), need to divide one by the other precisely (3.50 / 350) the result would be 0.01.

var tamanho = parseInt($("#tamanho").val());
var valor = $("#valor").val();
var valorMl = valor / tamanho;
console.log(valor, tamanho, valorMl);

valor returns 3,50.

tamanho returns 350.

valorMl returns NaN.

Answer 1

If the number coming from the text box is formatted with the vírgula representing the decimal, it will not work. In javascript, this role is the point .:

You need to replace the commas by dots, and to ensure using the function parseFloat that always returns a number:

function calc() {
  var tamanho = parseInt($("#tamanho").val());
  var valor = parseFloat($("#valor").val().replace(/\,/, '.'));
  var valorMl = valor / tamanho;
  console.log(valor, tamanho, valorMl);
}

calc();

$("#tamanho, #valor").on('input', calc);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Tamanho:
<input type="text" value="350" id="tamanho">
<br>Valor:
<input type="text" value="3,50" id="valor">