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Onkeydown event In Java Script

This event occurs when user presses a key , at the time of pressing the key this event gets fired. When user presses a key from keyboard the key goes down and as soon as the key goes down this event gets fired and can be trapped by using onkeydown event. A programmer can get the key pressed by the user before flashing the character on the screen.
 
Example:
 
<html>

<head>

<title>events </title>

</head>

<body bgcolor=green text=yellow>

<h4 align =center> Type character in the textbox </h4>

<blockquote> You will notice that the dialogbox appears   before the character appears in the textbox </blockquote>

name : <input type=”text” name=”t1″ onkeydown=”ff()”>  

<script>

function ff()

{

alert(“you pressed “+ event.keyCode)

}

</script>

</body>

</html>

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