CODEWITHSUNDEEP
javascriptjqueryonfocuskey-events
Santosh
Santosh

Reputation: 2505

Check for CapsLock ON in "onfocus" event

My following code for checking whether Capslock is on or not works fine on "onkeypress" event.

But i want it for "onfocus" event. i tried replacing "onkeypress" with "onfocus" for the control,but it doesnt work for me.

Any help? (either in javascript or Jquery)

 <script type="text/javascript" language="Javascript">
    function capLock(e) {
        kc = e.keyCode ? e.keyCode : e.which;
        sk = e.shiftKey ? e.shiftKey : ((kc == 16) ? true : false);
        if (((kc >= 65 && kc <= 90) && !sk) || ((kc >= 97 && kc <= 122) && sk))
            document.getElementById('divMayus').style.visibility = 'visible';
        else
            document.getElementById('divMayus').style.visibility = 'hidden';
    }
</script>

<input type="text" name="txtuname" />
<input type="password" name="txtPassword" onkeypress="capLock(event)" />
<div id="divMayus" style="visibility:hidden">Caps Lock is on.</div>

Upvotes: 3

Views: 12424

Answers (4)

rajat kumar
rajat kumar

Reputation: 1

It is quite simple .. use mousedown instead of focus..

#Code to detect capsLock is ON when we put mouse inside input field...

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <input type="text" name="" id="inputme">
    <p id="log" style="color:red"></p>
    <script>
        function checkCapsLock(e) {
          if (e.getModifierState('CapsLock'))
              log.textContent = `capsLock is ON!`;
          else 
              log.textContent = ``;
        }
        inputme.addEventListener('mousedown', checkCapsLock);
        inputme.addEventListener('keyup', checkCapsLock);
    </script>
</body>
</html>

Upvotes: 0

nosilleg
nosilleg

Reputation: 2163

There is a jQuery plugin called capslockstate which will keep track of the state of the caps lock key, allowing you to use that information as and when needed.

It will monitor the state for the entire page, and then you can retrieve the state when the desired element gains focus.

It's also based on watching key presses, but not limited to lower ASCII characters and handles situations like the Caps Lock key itself being pressed.

Your situation would become something like:

<script src="{path-to}/jquery-capslockstate.js"></script>
<script>
    $(document).ready(function() {
        $(window).capslockstate();

        $(window).bind("capsOn", function(event) {
            if ($("#txtPassword:focus").length > 0) {
                document.getElementById('divMayus').style.visibility = 'visible';
            }
        });
        $(window).bind("capsOff capsUnknown", function(event) {
            document.getElementById('divMayus').style.visibility = 'hidden';
        });
        $("#txtPassword").bind("focusout", function(event) {
            document.getElementById('divMayus').style.visibility = 'hidden';
        });
        $("#txtPassword").bind("focusin", function(event) {
            if ($(window).capslockstate("state") === true) {
                document.getElementById('divMayus').style.visibility = 'visible';
            }
        });
    });
</script>

<input type="text" name="txtuname" />
<input type="password" name="txtPassword" id="txtPassword" />
<div id="divMayus" style="visibility:hidden">Caps Lock is on.</div>

Note that I've only jQueryified the essential bits, more could still be done.

Upvotes: 5

gaurang171
gaurang171

Reputation: 9080

Its seems impossible to detect caps lock onfocus I think this may help you please visit this

http://jaspreetchahal.org/jquery-caps-lock-detection-plugin/

Upvotes: 0

Liam Wiltshire
Liam Wiltshire

Reputation: 1264

Unfortunately not - the keyCode property of the event object is only sent on key-based events (for obvious reasons), which is why it wouldn't work onfocus, onclick etc.

There aren't any other JavaScript ways of doing it - although there is a potential solution if you use flash - but that seems somewhat overkill for your requirements...

Upvotes: 1

Related Questions