how to javascript

>'hello'.toUpperCase()
'HELLO'/* Answer to: "javascript" */

// JavaScript, often abbreviated as JS, is a programming 
// language that conforms to the ECMAScript specification.

// In other words, it's what makes everything on the website
// work, behind the scenes.

// For example, when you click on the the "add to cart" button
// in Amazon, it's JavaScript (or another programming language)
// that will add the item to the "cart".var  = "";