Create a reference

Create a function

Create an array

Create an object

Assign properties to an object

Iterate through an array

Iterate over an object

Get a reference to an element

Get a reference to a collection of elements

Modify an element’s style

Create an element

Add an element to another element

Append text to an element

Modify element content

Create a class

Bind a context to a function

Listen for an event

Get data from a server

Simple recursion