DHTML Event Handlers
HTML events can trigger actions in the browser.
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Try it Yourself - Examples |
onclick
How to change an image when a user clicks on it.
onmousedown and onmouseup
Change an image when a user holds down the mouse button.
onload
Display an alert box when the page has finished loading.
Event handlers
An event handler allows you to execute code when an event occurs.
Events are generated by the browser when the user clicks an element, when the page loads, when a form is submitted, etc.
In the following example, the h1 heading changes when a user clicks on it:
Example
<html>
<body>
<h1 onclick="this.innerHTML='Ooops!'">Click on this text</h1>
</body>
</html>
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You can also add a script in the head section of the page and then call the function from the event handler:
Example
<html>
<head>
<script type="text/javascript">
function changetext(id)
{
id.innerHTML="Ooops!";
}
</script>
</head>
<body>
<h1 onclick="changetext(this)">Click on this text</h1>
</body>
</html>
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More About HTML Events
For all HTML events, look at our complete HTML DOM Event Object Reference.
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