altKey event properties
Event objects Definition and Usage
altKey event attribute returns a Boolean value. Indicate when a specified event occurs, Alt key is pressed and hold up.
grammar
event.altKey=true|false|1|0
Examples
Examples
The following example prompts when the mouse button is clicked "ALT" key is pressed whether:
<html>
<head>
<script>
function isKeyPressed(event)
{
if (event.altKey==1)
{
alert("The ALT key was pressed!")
}
else
{
alert("The ALT key was NOT pressed!")
}
}
</script>
</head>
<body onmousedown="isKeyPressed(event)">
<p>Click somewhere in the document.
An alert box will tell you if you
pressed the ALT key or not.</p>
</body>
</html>
<head>
<script>
function isKeyPressed(event)
{
if (event.altKey==1)
{
alert("The ALT key was pressed!")
}
else
{
alert("The ALT key was NOT pressed!")
}
}
</script>
</head>
<body onmousedown="isKeyPressed(event)">
<p>Click somewhere in the document.
An alert box will tell you if you
pressed the ALT key or not.</p>
</body>
</html>
try it"
Event objects