Example: Demo
Example: empty.js
Should be empty.
Example: #local-script
Should say "Hi there!".
Example: sandbox=""
Should be empty.
Example: sandbox="allow-forms"
Should add an input field.
Example: localStorage
Example: Canvas
Example: amp-state
Should read "123" after tapping button below.
AMP.setState({bar: 123})
Prints AMP.getState('foo')