Viktor Horst Viktor Horst - 1 year ago 124
HTML Question

Calculate subtotal and total with javascript

I am trying to add two values together. The value of #price and the value of #subtotal. Subtotal is being calculated with the Jquery script and is working. The other script isn't working but does work on its own.

The div's #price, #subtotal and #total must be div's and cannot be changed into text fields with value.


/* JQUERY */
jQuery(document).ready(function($) {
$("#checkboxdiv input:checkbox").change(function() {
var total = 0;
$('#checkboxdiv input:checkbox:checked').each(function() {
total += parseInt(this.value, 10);

$(document).ready(function() {
$("#total").append(addnumbers($("#price").html(), $("#subtotal").html()));

function addnumbers(price, subtotal) {
return (Number(price) + Number(subtotal));

<script src=""></script>
<div id="price">10500</div>

<div id="checkboxdiv">
<input type="checkbox" value="300">Optie 1
<input type="checkbox" value="750">Optie 2
<input type="checkbox" value="25">Optie 3
<input type="checkbox" value="1200">Optie 4

<div id="subtotal"></div>

<div id="total"></div>

Answer Source

I'm not completely sure if I understand what you want... I guess is that when you click a checkbox, subtotal and total are updated. If that's the case, you can do it with....

$("#checkboxdiv input:checkbox").change(function() {

    var subtotal = 0;

    $('#checkboxdiv input:checkbox:checked').each(function() {
        subtotal += parseInt(this.value, 10);

    $('div#total').text(parseInt($('div#price').text()) + subtotal);

// If you want to show the initial values, just trigger the event.
$("#checkboxdiv input:checkbox").trigger('change');

I hope it helps

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