JSFiddle - React, Tailwind, and code Playground
by jfriend00
HTML
<pre id="input"></pre>
<hr>
<pre id="output"></pre>
JavaScript
var str = "0123456789\r\n0123456789\r\n0123456789\r\n0123456789";
document.getElementById("input").innerHTML = JSON.stringify(str);
document.getElementById("output").innerHTML = JSON.stringify(str.replace(/\r\n/g, ""));