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- CommentAuthorccblaisdell
- CommentTimeJan 22nd 2007
I’m working on a web application and would like to add keyboard shortcuts similar to GMail’s, but I’m having trouble finding any guides on how to do it. Prototype’s new docs seem to indicate that it can listen for keypresses with the <a href=“http://prototypejs.org/api/event”>Event class</a>, but how do I do this?
Also, it only lists a few keypresses on that page, like KEY_BACKSPACE, etc. Where can I find what the names of other keys are?
Obviously I’m more of a web designer than a developer, but I’m trying to learn! I’m also using <a href=“http://script.aculo.us/”>script.aculo.us</a> and <a href=“http://www.bennolan.com/behaviour/”>behaviour.js</a>, by the way.
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- CommentAuthorccblaisdell
- CommentTimeJan 23rd 2007
So @event.keyCode@ and @String.fromCharCode()@ will get me the key pressed, but how do I capture that event in the first place?
I’ve been using @Event.observe()@ and behaviour.js’s event observation, but I only know how to listen for very specific actions on a specific element, like a @click@ on my anchor with @id=“load”@ or something. The article you referenced begins with the assumption that I’ve already captured the event, but I’m way dumber than that.
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ah sorry, here's how to capture the keydown event using prototype.js:
Event.observe(window, 'load', function() {
Event.observe(document, 'keypress', function(e){
var code;
if (!e) var e = window.event;
if (e.keyCode) code = e.keyCode;
else if (e.which) code = e.which;
var character = String.fromCharCode(code);
alert('Character was ' + character);
});
});
that script will listen for keypress events after the page loads. you can then replace the alert() with whatever functionality you want -
- CommentAuthorccblaisdell
- CommentTimeJan 23rd 2007
Thanks, John, that’s exactly what I needed!
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