cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - Activehtmlicon-personicon-teamoctocatspinnerstartv

Pen Settings

CSS Base

Vendor Prefixing

Add External CSS

These stylesheets will be added in this order and before the code you write in the CSS editor. You can also add another Pen here, and it will pull the CSS from it. Try typing "font" or "ribbon" below.

Quick-add: + add another resource

Add External JavaScript

These scripts will run in this order and before the code in the JavaScript editor. You can also link to another Pen here, and it will run the JavaScript from it. Also try typing the name of any popular library.

Quick-add: + add another resource

Code Indentation


Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

              //EXAMPLE 1 ==============
//Global variable greeting.
var greeting = 'hello';

function sayGreeting(){
	console.log('greeting:', this.greeting);

sayGreeting(); //hello
//In this context, `this` points to the object which invoked it, the global context, aka. window

//EXAMPLE 2 ==============
//Constructor French which stores a property, greeting
var French = function (greeting){
	this.greeting = greeting;

//Prototype which holds the method sayGreeting
French.prototype = {
  sayGreeting: function() {
    console.log('greeting:', this.greeting);

//Create a new object, louis
var louis = new French('bonjour');

//Invoking louis.sayGreeting console.logs bonjour
//`this` points to the object which invoked it, aka louis
louis.sayGreeting() //bonjour

//EXAMPLE 3 ==============
//borrowedGreeting points to the method, louis.sayGreeting
var borrowedGreeting = louis.sayGreeting;

//Invoking borrowedGreeting console.logs hello
//`this` points to the object which invoked it, the global context, aka window
borrowedGreeting(); //hello

//Using .call() we can assign the `this` context of borrowedGreeting
borrowedGreeting.call(louis); //bonjour


Asset uploading is a PRO feature.

As a PRO member, you can drag-and-drop upload files here to use as resources. Images, Libraries, JSON data... anything you want. You can even edit them anytime, like any other code on CodePen.


Loading ..................