Implement DOM manipulation

[theRealProHacker]

An author script should be able to manipulate the DOM. This includes the following actions.

• remove a node from the DOM
• add a node to the DOM
• move a node from one parent to another or inside the parents children
• set the attribute of an element
  • This also includes convenience methods, especially revolving around class and style. Setting these should be simpler than just setting a string. For example, you could have add_class, remove_class and toggle_class or set_style(**kwargs).

Important is that elements are able to know about these changes, because they might have to react. This is especially true for ReplacedElements and MetaElements. E.g. a style element that's src is changed or an input that's type is changed.

[theRealProHacker]

We will try to implement this as close to jQuery as possible:

• after/before: Insert after/before the element
• append/prepend: Insert at the end/start of the element
• data, attr, val: See jq-docs
• detach+remove: Remove from the DOM
• empty: Remove all child nodes
• wrap: see documentation
• html: sets or gets the inner HTML