JSFiddle - React, Tailwind, and code Playground

by jakelauer

HTML

<h4>
Result 1
</h4>
<input id="result-1"/>
<h4>
Result 2
</h4>
<input id="result-2"/>

JavaScript

var testArray1 = [1,2,3];
var oldValues1 = testArray1;
testArray1.push(4, 5, 6);

$("#result-1").val(JSON.stringify(oldValues1));

var testArray2 = [1,2,3];
var oldValues2 = [...testArray2]; // or use $.extend([], testArray2);
testArray2.push(4, 5, 6);

$("#result-2").val(JSON.stringify(oldValues2));