- How to get the value of the selected radio button in a group.
- How to get the value of a radio button onclick.
- How to handle checkboxes onclick.
- How to get the value of or a reference to the selected option in a select box.
- How to get the selected options in a select box that allows multiple selections.
- How to connect select lists so that a selection in one changes options in the other.
- How to handle radio buttons and checkboxes onclick: a pizza order form demonstrates.
- How to set the height of an iframe to show all of its content.
- How to load new documents in iframes.
- How to communicate between documents when using iframes.
- Iframes and postMessage: safe cross-domain communication
- How to add and remove elements from an array.
- How to iterate over the elements in an array.
- How to search and sort arrays.
- How to convert the elements of an array to a string.