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

JSFiddle - React, Tailwind, and code Playground

HTML

<p>THIS IS THE FIRST SENTENCE. And this is the second, as it is from the server.</p>

<div class="result"></div>

JavaScript

var firstSentenceText = $('p').text();
var firstSentence = firstSentenceText.substr(0, firstSentenceText.indexOf('.')).toLowerCase();

var result = firstSentenceText.charAt(0).toUpperCase() + firstSentence.substring(1);

$('.result').text(result + '.')

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JSFiddle - React, Tailwind, and code Playground

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