Appendix C. JavaScript Event Handlers

In the Behaviors panel, Dreamweaver lists the JavaScript event handler that controls the behavior's activation. To help you figure out exactly what is happening on your page and when, or to set the behavior to fire under different circumstances, please see the following table.

This table lists the most common and reliable JavaScript eventsthe ones that tend to work across browsers and devices. Depending upon your Dreamweaver settings, the Behaviors panel may offer a great many other JavaScript events from which to choose. You should probably avoid the ones that don't appear in this table, because they often lead to compatibility problems.

As always, be sure to test your behaviors in several different live browsers before you upload your pages, even if you pick from the safe choices. Not all browsers support all events under exactly the same set of circumstances.

Table C-1.

Event	Fires when
onAbort	The visitor stops an image from downloading
onBlur	The element loses focus
onChange	The visitor alters a text field, text area, list, or menu
onClick	The visitor single-clicks with the left mouse button
onDblClick	The visitor double-clicks with the left mouse button
onDragDrop	The visitor drags an item and drops it on the browser window
onError	An image does not download correctly, usually because the path to the image is incorrect
onFocus	The element gains focus
onKeyDown	The visitor holds down a key
onKeyPress	The visitor presses a key
onKeyUp	The visitor releases a pressed key
onLoad	The browser loads the current web page
onMouseDown	The visitor holds down the left mouse button
onMouseMove	The visitor moves the mouse
onMouseOut	The visitor moves the mouse pointer away from the element
onMouseOver	The visitor hovers over the element with the mouse pointer
onMouseUp	The visitor releases the left mouse button after holding it down
onMove	The visitor moves a window or frame
onReset	The visitor resets a form
onResize	The visitor resizes the browser window
onSelect	The visitor selects text in a text field or text area
onSubmit	The visitor submits a form
onUnload	The browser begins to load a new web page