JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://www.pengoworks.com/workshop/jquery/calculation/jquery.calculation.min.js"></script>
<form action="" method="post" id="nutform" onsubmit="return false;">
<h2>Taqueria Nutritionals</h2>
<h4>Pick Your Meal</h4>
<ul class="options">
<li>
<input type="radio" id="wwheatt" name="meal" value="whole_wheat_tortilla"> Whole Wheat Tortilla
<span class="caloriesSum">280</span>
<span class="fatSum">6</span>
<span class="satfatSum">0</span>
<span class="carbsSum">44</span>
<span class="proteinSum">8</span>
<span class="sodiumSum">340</span>
<span class="chloesterolSum">0</span>
</li>
<li>
<input type="radio" name="meal" value="flour_tortilla"> Flour Tortilla
<span class="caloriesSum">290</span>
<span class="fatSum">6</span>
<span class="satfatSum">2</span>
<span class="carbsSum">49</span>
<span class="proteinSum">9</span>
<span class="sodiumSum">770</span>
<span class="chloesterolSum">0</span>
</li>
<li>
<input type="radio" name="meal" value="naked"> Naked, zero nutrients
<span class="caloriesSum">0</span>
<span class="fatSum">0</span>
<span class="satfatSum">0</span>
<span class="carbsSum">0</span>
<span class="proteinSum">0</span>
<span class="sodiumSum">0</span>
<span class="chloesterolSum">0</span>
</li>
</ul>
<h4>Select Your Protein</h4>
<ul class="options">
...
CSS
ul.options li span {display:none;}
#totals {padding:20px; background:#eee;}
#totals span {font-weight:bold;}
JavaScript
$(document).ready(function() {
$('.options').on('change', 'input', function() {
var $self = $(this);
var inputType = $self.attr('type');
if (inputType == 'radio') {
$self.parent('li').addClass('active').siblings().removeClass('active');
} else if (inputType == 'checkbox') {
$self.parent('li').toggleClass('active');
}
runUpdate();
});
});
function runUpdate() {
// get the sum of the elements
var calories = $(".caloriesSum", '.active').sum();
var fat = $(".fatSum", '.active').sum();
var satfat = $(".satfatSum", '.active').sum();
var carbs = $(".carbsSum", '.active').sum();
var protein = $(".proteinSum", '.active').sum();
var sodium = $(".sodiumSum", '.active').sum();
var chloresterol = $(".chloesterolSum", '.active').sum();
// update the total
$("#totalCalories").text(+calories.toString());
$("#totalFat").text(+fat.toString());
$("#totalSatFat").text(+satfat.toString());
$("#totalCarbs").text(+carbs.toString());
$("#totalProtein").text(+protein.toString());
$("#totalSodium").text(+sodium.toString());
$("#totalChloresterol").text(+chloresterol.toString());
}