JSFiddle - React, Tailwind, and code Playground

by Andrew Gerst

JavaScript

function Rectangle(w, h) {
    this.width = w;
    this.height = h;
}

Rectangle.prototype.area = function() {
    return this.width * this.height;
};

var page = new Rectangle(8.5, 11);
var page2 = new Rectangle(12, 12);

alert(page.area());
alert(page2.area());