08.3.2009

jQuery: Catch Keyboard Events

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Link: http://www.freelancer-id.com/files/jkey/

Lot of jQuery projects relies on keyboard/mouse event like pressing "p" for previous and "n" for next also using the arrows.

Because this is important, I have managed a code to get the keyboard character on 3 events:
- Keypress
- Keyup
- Keydown

I have created a function to return the key as below:

function getKey(key){
if ( key == null ) {
keycode = event.keyCode;
// To Mozilla
} else {
keycode = key.keyCode;
}
// Return the key in lower case form
return String.fromCharCode(keycode).toLowerCase();
}

Now let's use the events:

/*Keypress*/
$(document).keypress(function (eh){
alert("Keypress: The key is: "+getKey(eh));
});

/*Keyup*/
$(document).keyup(function (eh){
alert("Keyup: The key is: "+getKey(eh));
});

/*keydown*/
$(document).keydown(function (eh){
alert("Keydown: The key is: "+getKey(eh));
});

To see an exaple of this code, please check the demo below:
jKey demo

Have fun.

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