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<title>HTML DOM Event Object</title>
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
<h1>HTML DOM Event Object</h1>
<hr />
<p class="intro">The event object gives you information about an event that has
occurred.</p>
<hr />
<h2>Examples</h2>
<p><a href="../js/tryit.asp@filename=try_dom_event_button" target="_blank">Which mouse button was clicked?</a></p>
<p><a href="../js/tryit.asp@filename=try_dom_event_clientxy" target="_blank">What are the coordinates of the cursor?</a></p>
<p><a href="../js/tryit.asp@filename=try_dom_event_keycode" target="_blank">What is the unicode of the key pressed?</a></p>
<p><a href="../js/tryit.asp@filename=try_dom_event_screenxy" target="_blank">What are the coordinates of the cursor, relative to the screen?</a></p>
<p><a href="../js/tryit.asp@filename=try_dom_event_xy" target="_blank">What are the coordinates of the cursor?</a></p>
<p><a href="../js/tryit.asp@filename=try_dom_event_shiftkey" target="_blank">Was the shift key pressed?</a></p>
<p><a href="../js/tryit.asp@filename=try_dom_event_srcelement" target="_blank">Which element was clicked?</a></p>
<p><a href="../js/tryit.asp@filename=try_dom_event_type" target="_blank">Which eventype occured?</a></p>
<hr />
<h2>Event Object</h2>
<p>The Event object represents the state of an event, such as the element in
which the event occurred, the state of the keyboard keys, the location of the
mouse, and the state of the mouse buttons.</p>
<p>Events are normally used in combination with functions, and the function will
not be executed before the event occurs!</p>
<p>
<b>IE:</b> Internet Explorer, <b>F:</b> Firefox, <b>O:</b> Opera, <b>W3C:</b>
World Wide Web Consortium (Internet Standard).</p>
<h2>Event Handlers</h2>
<p>New to HTML 4.0 was the ability to let HTML events trigger actions in the
browser, like starting a JavaScript when a user clicks on an HTML element. Below
is a list of the attributes that can be inserted into HTML tags to define event
actions.</p>
<table class="ex" cellspacing="0" border="1" width="100%" id="table4">
<tr>
<th width="30%" align="left" valign="top">Attribute</th>
<th width="50%" align="left" valign="top">The event occurs when...</th>
<th width="5%" align="left" valign="top">IE</th>
<th width="4%" align="left" valign="top">F</th>
<th width="4%" align="left" valign="top">O</th>
<th width="7%" align="left" valign="top">W3C</th>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onabort.asp">onabort</a></td>
<td valign="top">Loading of an image is interrupted</td>
<td valign="top">4</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onblur.asp">onblur</a></td>
<td valign="top">An element loses focus</td>
<td valign="top">3</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onchange.asp">onchange</a></td>
<td valign="top">The content of a field changes</td>
<td valign="top">3</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onclick.asp">onclick</a></td>
<td valign="top">Mouse clicks an object</td>
<td valign="top">3</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_ondblclick.asp">ondblclick</a></td>
<td valign="top">Mouse double-clicks an object</td>
<td valign="top">4</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onerror.asp">onerror</a></td>
<td valign="top">An error occurs when loading a document or an image</td>
<td valign="top">4</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onfocus.asp">onfocus</a></td>
<td valign="top">An element gets focus</td>
<td valign="top">3</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onkeydown.asp">onkeydown</a></td>
<td valign="top">A keyboard key is pressed</td>
<td valign="top">3</td>
<td valign="top">1</td>
<td valign="top">No</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onkeypress.asp">onkeypress</a></td>
<td valign="top">A keyboard key is pressed or held down</td>
<td valign="top">3</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onkeyup.asp">onkeyup</a></td>
<td valign="top">A keyboard key is released</td>
<td valign="top">3</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onload.asp">onload</a></td>
<td valign="top">A page or an image is finished loading</td>
<td valign="top">3</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onmousedown.asp">onmousedown</a></td>
<td valign="top">A mouse button is pressed</td>
<td valign="top">4</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a href="event_onmousemove.asp">onmousemove</a></td>
<td valign="top">The mouse is moved</td>
<td valign="top">3</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onmouseout.asp">onmouseout</a></td>
<td valign="top">The mouse is moved off an element</td>
<td valign="top">4</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onmouseover.asp">onmouseover</a></td>
<td valign="top">The mouse is moved over an element</td>
<td valign="top">3</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onmouseup.asp">onmouseup</a></td>
<td valign="top">A mouse button is released</td>
<td valign="top">4</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
<tr>
<td valign="top"><a target="_top" href="event_onreset.asp">onreset</a></td>
<td valign="top">The reset button is clicked</td>
<td valign="top">4</td>
<td valign="top">1</td>
<td valign="top">9</td>
<td valign="top">Yes</td>
</tr>
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