How do you tell if caps lock is on using JavaScript?

by

In jQuery,

$('#example').keypress(function(e) { 
    var s = String.fromCharCode( e.which );
    if ( s.toUpperCase() === s && s.toLowerCase() !== s && !e.shiftKey ) {
        alert('caps is on');
    }
});

Avoid the mistake, like the backspace key, s.toLowerCase() !== s is needed.

More Related Contents:

  1. Run javascript function when user finishes typing instead of on key up?
  2. Binding arrow keys in JS/jQuery
  3. How do I detect keypresses in Javascript?
  4. How can I hide the Android keyboard using JavaScript?
  5. How can I give keyboard focus to a DIV and attach keyboard event handlers to it?
  6. Simulate Keypress With jQuery
  7. Handling key-press events (F1-F12) using JavaScript and jQuery, cross-browser
  8. How can I add a keyboard shortcut to an existing JavaScript Function?
  9. keypress and keyup – why is the keyCode different?
  10. prevent mobile default keyboard when focusing an from showing
  11. Manually triggering the iPhone/iPad/iPod keyboard from JavaScript
  12. How to know if .keyup() is a character key (jQuery)
  13. Check if a key is down?
  14. How can I avoid autorepeated keydown events in JavaScript?
  15. Keylistener in Javascript
  16. Can javascript tell the difference between left and right shift key?
  17. Force iOS numeric keyboard with custom / currency pattern
  18. How to get the index of highest value containing negative number from an array in javascript? [duplicate]
  19. What is the JavaScript version of sleep()?
  20. Convert Data URI to File then append to FormData
  21. Variable doesn’t get returned from AJAX function
  22. Declaring variables without var keyword
  23. Promise.all: Order of resolved values
  24. How to insert text into the textarea at the current cursor position?
  25. Very Simple, Very Smooth, JavaScript Marquee
  26. How to parse a URL?
  27. Wrap link around
  28. Auto increment a value in firebase with javascript
  29. Javascript date variable assignment
  30. Convert long number into abbreviated string in JavaScript, with a special shortness requirement

Leave a Comment