Edit fiddle - JSFiddle - React, Tailwind, and code Playground

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HTML

<input type="hidden" name="hidden[1]" class="sum" value="10">
<input type="hidden" name="hidden[2]" class="sum" value="21">
<input type="hidden" name="hidden[3]" class="sum" value="321">
<input type="hidden" name="hidden[4]" class="sum" value="-31">
<input type="hidden" name="hidden[5]" class="sum" value="31">
<input type="hidden" name="hidden[6]" class="sum" value="0">

JavaScript

var totalSum = 0;
$('.sum').each(function () {
    totalSum += parseFloat(this.value);
});
alert(totalSum);

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JSFiddle - React, Tailwind, and code Playground

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JavaScript

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Join the 4+ million users, and keep the JSFiddle dream alive.

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Use pre-released features

Fiddle collections

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Console