https://www.above.com/js/capswarn.js?1790916611

1// JavaScript Document
2
3$(function(){
4//Initialize to hide caps-lock-warning
5$('.caps-lock-warning').hide();
6
7//Sniff for Caps-Lock state
8$("#password").keypress(function(e) {
9var s = String.fromCharCode( e.which );
10if((s.toUpperCase() === s && s.toLowerCase() !== s && !e.shiftKey)||
11(s.toUpperCase() !== s && s.toLowerCase() === s && e.shiftKey)) {
12this.caps = true; // Enables to do something on Caps-Lock keypress
13$(this).next('.caps-lock-warning').show();
14} else if((s.toLowerCase() === s && s.toUpperCase() !== s && !e.shiftKey)||
15(s.toLowerCase() !== s && s.toUpperCase() === s && e.shiftKey)) {
16this.caps = false; // Enables to do something on Caps-Lock keypress
17$(this).next('.caps-lock-warning').hide();
18
19}//else else do nothing if not a letter we can use to differentiate
20});
21
22//Toggle warning message on Caps-Lock toggle (with some limitation)
23$(document).keydown(function(e){
24if(e.which==20){ // Caps-Lock keypress
25var pass = document.getElementById("password");
26if(pass !== null && typeof(pass.caps) === 'boolean'){
27//State has been set to a known value by keypress
28pass.caps = !pass.caps;
29$(pass).next('.caps-lock-warning').toggle(pass.caps);
30
31//if(document.getElementById("password").value == document.getElementById("password").value.toUpperCase())
32//	document.getElementById("password").value=""
33
34}
35}
36});
37
38//Disable on window lost focus (because we loose track of state)
39$(window).blur(function(e){
40// If window is inactive, we have no control on the caps lock toggling
41// so better to re-set state
42var pass = document.getElementById("password");
43if(pass !== null && typeof(pass.caps) === 'boolean'){
44pass.caps = null;
45$(pass).next('.caps-lock-warning').hide();
46
47}
48});
49});
50