JSFiddle - React, Tailwind, and code Playground

by Zaheer Ahmed

JavaScript

(function() {
    var myVar = 'Hello, Undeclared Variable!';
    alert(myVar)  //=> Hello, Undeclared Variable
})();
try{
alert(myVar)  //=> Hello, Undeclared Variable
}catch(e){
    alert("Error :"+e);
}