SUMMARY

Even though HTML and web applications have changed dramatically since their inception, web forms have remained mostly unchanged. JavaScript can be used to augment existing form fields to provide new functionality and usability enhancements. To aid in this, forms and form fields have properties, methods, and events for JavaScript usage. Here are some of the concepts introduced in this chapter:

• It's possible to select all of the text in a text box or just part of the text using a variety of standard and nonstandard methods.
• All browsers have adopted Firefox's way of interacting with text selection, making it a true standard.
• Text boxes can be changed to allow or disallow certain characters by listening for keyboard events and inspecting the characters being inserted.

All browsers support events for the clipboard, including copy, cut, and paste. Clipboard event implementations across the other browsers vary widely between browser vendors.

Hooking into clipboard events is...