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

JSFiddle - React, Tailwind, and code Playground

HTML

<span  class="cosT">20.55</span>

JavaScript

let addedValue = parseFloat(document.getElementsByClassName("cosT")[0].textContent) + 10.90
/* console.log('Addition ->', addedValue.toFixed(2)) */

document.getElementsByClassName("cosT")[0].innerHTML = addedValue.toFixed(2);

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JSFiddle - React, Tailwind, and code Playground

HTML

JavaScript

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

Ad-free

Use pre-released features

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Private collections and fiddles

Console