JSFiddle - React, Tailwind, and code Playground

by uttara

HTML

<div id="container"><h1>Add-ons</h1>
<input type="checkbox" name="ch1" value="10" id="qr1" />Add-on Number 1 - 10 QR <br />
<input type="checkbox" name="ch1" value="20" id="qr1" />Add-on Number 2 - 20 QR <br />
<input type="checkbox" name="ch1" value="40" id="qr1" />Add-on Number 3 - 40 QR <br />
<input type="checkbox" name="ch1" value="60" id="qr1" />Add-on Number 4 - 60 QR <br />
</div>

<div> I want more add-ons
<select id="more" name="more">
    <option value="0 QR">0</option>
    <option value="30 QR">1</option>
    <option value="50 QR">2</option>
    <option value="100 QR">3</option>
</select>
<span id="span"></span>
 User total usage: <span id="usertotal"> </span>

JavaScript

function displayVals() {
      var singleValues = $("#more").val(); 
       alert(singleValues);      
      $("#span").html("<b>more addons:</b> " + 
                  singleValues);
         }

    $("select").change(displayVals);
    displayVals();
//For  checkboxes
var $cbs = $('input[name="ch1"]');
$cbs.click(function() {
    var total = 0;
    $cbs.each(function() {
        if (this.checked)
            var singleValues = $("#more").val().replace(/ QR/g,"");
        alert(singleValues);
            total += parseInt(this.value.replace(/ QR/g, "")) + parseInt(singleValues);
    });
    $("#usertotal").text(total);
});