JSFiddle - React, Tailwind, and code Playground

by Sivasakthi Chandrasekaran

HTML

<p>Click the button to create an array, then display its length.</p>

<button onclick="myFunction()">Try it</button>

<p id="demo"></p>

JavaScript

function myFunction() {
    var mystring = ["1,2,3,4"];
    var elements = mystring.toString().replace (/(^")|("$)/g, '').split(',').length;
    document.getElementById("demo").innerHTML = elements;
}