- From: Dave Tapuska <dtapuska@chromium.org>
- Date: Mon, 14 Dec 2015 15:08:11 -0500
- To: Rob Garrison <wowmotty@gmail.com>
- Cc: www-dom@w3.org
- Message-ID: <CAHXv1wnAGsXOs522m-H630=3YppEo5i34dU2MaLN1re0MhhUEg@mail.gmail.com>
Check out https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/getModifierState It should be supported or at least in Chrome's case is making its way through the release channels. dave. On Mon, Dec 14, 2015 at 3:00 PM, Rob Garrison <wowmotty@gmail.com> wrote: > Hi! > > There is no way to determine the actual state of a caps lock key. I would > like > to request an enhancement of the event object to include the caps lock > state: > > ```js > document.addEventListener( 'keydown', function( event ) { > if ( event.capsLock ) { > alert( 'caps lock on!' ); > } > }); > ``` > > This basic method targets the "a" through "z" and capital "A" through "Z" > characters to make a comparison. This method does not include accented > characters that would be available on non-U.S. or international keyboards, > and it can only be used during a "keypress" event. "keypress" is the > only event in which `event.charCode` returns accurate values. > > ```js > document.addEventListener( 'keypress', function( event ) { > var k = event.charCode; > // ASCII uppercase A = 65; ascii uppercase Z = 90 > if ( ( ( k >= 65 && k <= 90 ) && !event.shiftKey ) || > // ASCII lowercase a = 97; ASCII lowercase z = 122 > ( ( k >= 97 && k <= 122) && e.shiftKey ) ) { > alert( 'caps lock on!' ); > } > }); > ``` > > I know modern keyboards are starting to replace the caps lock key with a > control key, but I think this would still be a useful addition. > > Thanks for your attention. >
Received on Monday, 14 December 2015 20:09:17 UTC