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JavaScript onmousedown Event
 Complete Event Reference
Definition and Usage
The onmousedown event occurs when a mouse button is clicked.
Syntax
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onmousedown="SomeJavaScriptCode"
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| Parameter |
Description |
| SomeJavaScriptCode |
Required. Specifies a JavaScript to be executed when the
event occurs. |
Supported by the following HTML tags:
<a>, <address>, <area>, <b>, <bdo>, <big>, <blockquote>,
<body>, <button>, <caption>, <cite>, <code>, <dd>, <dfn>, <div>,
<dl>, <dt>, <em>, <fieldset>,
<form>, <h1> to <h6>, <hr>, <i>,
<img>, <input>, <kbd>, <label>, <legend>, <li>,
<map>, <ol>, <p>, <pre>,
<samp>, <select>, <small>, <span>, <strong>, <sub>, <sup>, <table>, <tbody>,
<td>, <textarea>, <tfoot>, <th>, <thead>, <tr>, <tt>, <ul>, <var>
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Supported by the following JavaScript objects:
Example 1
In this example an alert box is displayed when clicking on the picture:
<img src="image_w3default.gif"
onmousedown="alert('You clicked the picture!')">
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The output of the code above will be (click on the picture):
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Example 2
In this example an alert box will alert the tag name of the element you
clicked on:
<html>
<head>
<script type="text/javascript">
function whichElement(e)
{
var targ;
if (!e)
{
var e = window.event;
}
if (e.target)
{
targ = e.target;
}
else if (e.srcElement)
{
targ = e.srcElement;
}
if (targ.nodeType == 3) // defeat Safari bug
{
targ = targ.parentNode;
}
var tname;
tname=targ.tagName;
alert("You clicked on a " + tname + " element.");
}
</script>
</head>
<body onmousedown="whichElement(event)">
<h2>This is a header</h2>
<p>This is a paragraph</p>
<img border="0" src="ball16.gif" alt="Ball">
</body>
</html>
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Complete Event Reference
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