File Under: JavaScript

JavaScript Event – Mousedown

This code was written based on a template by John Resig. The original can be found at John Resig’s addEvent function website.

The code, and the template, are referred to in Webmonkey’s JavaScript Events reference page. In this example, the onMousedown event fires whenever a mouse button is pressed down. If attached to a specific object (such as the div in the example below), the event only fires if the mouse is pressed down within the bounds of that object.

The Code

<html>

<head>

<script>

// addEvent function by John Resig:

// http://ejohn.org/projects/flexible-javascript-events/

function addEvent( obj, type, fn ) {

  if ( obj.attachEvent ) {

    obj['e'+type+fn] = fn;

    obj[type+fn] = function(){obj['e'+type+fn]( window.event );}

    obj.attachEvent( 'on'+type, obj[type+fn] );

  } else

    obj.addEventListener( type, fn, false );

}

</script>

</head>

<body>



<!-- HTML for example event goes here -->

<div id="mydiv" style="border: 1px solid black; width: 100px; height: 100px; margin-top: 10px;"></div>



<script>

// Script for example event goes here

addEvent(document.getElementById('mydiv'), 'mousedown', function(event) {

	display_short('Mousedown');

});

function display_short(str)

{

	clearTimeout();

	document.getElementById('mydiv').innerHTML = str;

	if (str != '')

		setTimeout("display_short('')", 1000);

}

</script>

</body>

</html>

What it Looks Like