onmouseover Event

DHTML, HTML, & CSS

 
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onmouseover Event


Fires when the user moves the mouse pointer into the object.

Syntax

Inline HTML<ELEMENT onmouseover = "handler" ... >All platforms
Event propertyobject.onmouseover = handlerJScript (compatible with ECMA 262 language specification) only
Named script<SCRIPT FOR = object EVENT = onmouseover>Internet Explorer only

Remarks

BubblesYes
CancelsYes
To invoke Move the mouse pointer into an object.
Default action Initiates any action associated with this event.

The event occurs when the user moves the mouse pointer into the object, and it does not repeat unless the user moves the mouse pointer out of the object and then back into it.

Event Object Properties

Although event handlers in the DHTML Object Model do not receive parameters directly, the handler can query the event object for data.

Event Object Properties

altKeyRetrieves the current state of the ALT key.
buttonRetrieves which mouse button, if any, is pressed.
cancelBubbleSets or retrieves whether the current event should bubble up the hierarchy of event handlers.
clientXRetrieves the x-coordinate of the mouse cursor relative to the client area of the window, excluding window decorations or scroll bars.
clientYRetrieves the y-coordinate of the mouse cursor relative to the client area of the window, excluding window decorations or scroll bars.
ctrlKeyRetrieves the state of the CTRL key.
fromElementRetrieves the object the cursor is exiting during the onmouseover and onmouseout events.
offsetXRetrieves the horizontal coordinate of the mouse's position relative to the object firing the event.
offsetYRetrieves the vertical coordinate of the mouse's position relative to the object firing the event.
returnValueSets or retrieves the return value from the event.
screenXRetrieves the horizontal position of the mouse, in pixels, relative to the user's screen.
screenYRetrieves the vertical position of the mouse, in pixels, relative to the user's screen.
shiftKeyRetrieves the state of the SHIFT key.
srcElementRetrieves the object that fired the event.
toElementRetrieves the object being moved to as a result of an onmouseover or onmouseout event.
typeRetrieves the event name from the event object.
xRetrieves the x-coordinate of the mouse cursor relative to the parent element.
yRetrieves the y-coordinate of the mouse cursor relative to the parent element.

Example

This example uses the onmouseover event to apply a new style to an object.

<DIV>
<P onmouseover="this.style.color='red'"
   onmouseout="this.style.color='black'">
Move the mouse pointer over this text, then move it elsewhere in the 
document. Move the mouse pointer over this text, then move it 
elsewhere in the document.   
</DIV>

This example shows how to change the value of a text area in response to mouse events.

<DIV>
<P>Move the mouse pointer into the text area to fire the 
   onmouseover event. Move it out to clear the text.
<TEXTAREA NAME=txtMouseTrack 
   onmouseover="this.value='onmouseover fired'" 
   onmouseout="this.value=''">
</TEXTAREA>
</DIV>

This feature requires Internet Explorer 4.0 or later. Click the icon below to install the latest version. Then reload this page to view the sample.
Microsoft Internet Explorer

Applies To

[ Object Name ]
PlatformVersion
Win16:
Win32:
Mac:
Unix:
WinCE:
Version data is listed when the mouse hovers over a link, or the link has focus.
A, ADDRESS, APPLET, AREA, B, BDO, BIG, BLOCKQUOTE, BODY, BUTTON, CAPTION, CENTER, CITE, CODE, custom, DD, DFN, DIR, DIV, DL, document, DT, EM, EMBED, FIELDSET, FONT, FORM, Hn, HR, I, IMG, INPUT type=button, INPUT type=checkbox, INPUT type=file, INPUT type=image, INPUT type=password, INPUT type=radio, INPUT type=reset, INPUT type=submit, INPUT type=text, KBD, LABEL, LEGEND, LI, LISTING, MAP, MARQUEE, MENU, NEXTID, NOBR, OL, P, PLAINTEXT, PRE, RT, RUBY, S, SAMP, SELECT, SMALL, SPAN, STRIKE, STRONG, SUB, SUP, TABLE, TBODY, TD, TEXTAREA, TFOOT, TH, THEAD, TR, TT, U, UL, VAR, XMP

See Also

onmousedown, onmousemove, onmouseout, onmouseup


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