JavaScript mouse events

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Part 42 - JavaScript event capturing
Part 43 - Preventing browser default action
Part 44 - JavaScript to detect which mouse button is clicked



In this video we will discuss the commonly used JavaScript mouse events. Most browsers support these events.

mouseover	Occurs when the mouse pointer is moved over an element
mouseout	Occurs when the mouse pointer is moved out of an element
mousemove	Occurs when the mouse pointer is moving while it is over an element
mouseup	Occurs when the mouse button is released over an element
mousedown	Occurs when the mouse button is pressed over an element
click	Occurs when the mouse button is clicked. mousedown, mouseup & click events occur in sequence
dblclick	Occurs when the mouse button is double-clicked. mousedown, mouseup, mousedown, mouseup, click & dblclick events occur in sequence
contextmenu	Occurs when the mouse right button is clicked. mousedown, mouseup & contextmenu events occur in sequence

Here is an example which logs the mouse events to textarea element as they occur.

<input type="button" value="Single, Double or Right Click" onclick="logEvent(event)" onmousedown="logEvent(event)" onmouseup="logEvent(event)" onmouseover="logEvent(event)" onmouseout="logEvent(event)" ondblclick="logEvent(event)" oncontextmenu="logEvent(event)" />

<input type="button" value="Clear" onclick="clearText()"/>

<br /><br />

<textarea id="txtArea" rows="10" cols="20"></textarea>

<script type="text/javascript">

    function logEvent(event)

    {

        event = event || window.event;

        document.getElementById("txtArea").value += event.type + "\r\n";

    }

    function clearText()

    {

        document.getElementById("txtArea").value = "";

    }

</script>