JSFiddle - React, Tailwind, and code Playground

by Zaheer Ahmed

JavaScript

var dynamicVariable; // Now dynamicVariable is undefined
alert(typeof dynamicVariable);
dynamicVariable = 10; // Now dynamicVariable is a Number
alert(typeof dynamicVariable);
dynamicVariable = "Hello JavaScript"; // Now dynamicVariable is a String
alert(typeof dynamicVariable);
dynamicVariable = true; //Now dynamicVariable is a boolean
alert(typeof dynamicVariable);