JSFiddle - React, Tailwind, and code Playground

by Cody Lindley

HTML

<script src="https://dl.dropboxusercontent.com/u/2026291/firebug-lite-debug.js"></script>

JavaScript

var myFunction = function(parameter){
    parameter = undefined; //change parameter value to undefiend
    console.log(parameter);
};

var myArray = [1,2,3];

myFunction(myArray); //invoke myFunction, passing array

//myArray is not undefined regardless of if parameter is change in function
console.log(myArray); //logs [1,2,3]