JSFiddle - React, Tailwind, and code Playground

HTML

<textarea rows=4 id="mytextarea">John.2
Jane.3
John.4
Jane.5</textarea>
<br>
<button onclick="parseText()">Parse</button>

JavaScript

function parseText() {
    var textAreaValue = document.getElementById("mytextarea").value;
    //textAreaValue = textAreaValue.replace(/\s/g, ""); //remove white space

    var rows = textAreaValue.replace(/\r\n/g, "\n").split("\n");

    alert(rows);
}