I need to determine if the user has pressed the dot key on the numeric keypad. I wrote this first draft that works for me:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head><title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript"><!--
(function($){
var knownCodes = [
[110, 46],
[78, 46]
];
var pressedCodes = [null, null];
$.fn.comma = function(){
this.live("keydown", function(e){
pressedCodes = [e.which, null];
}).live("keypress", function(e){
pressedCodes[1] = e.which;
for(var i=0, len=knownCodes.length; i<len; i++){
if(pressedCodes[0]==knownCodes[i][0] && pressedCodes[1]==knownCodes[i][1]){
$("#log").append("<li>Decimal key detected</li>");
break;
}
}
});
return this;
};
$(function(){
$('<ol id="log"></ol>').appendTo("body");
});
})(jQuery);
jQuery(function($){
$(".comma input:text, .comma textarea").css("border", "1px solid black").comma();
});
</script>
</head>
<body>
<form action="" method="get" class="comma" size="20">
<p><input type="text"></p>
<p><textarea rows="3" cols="30"></textarea></p>
</form>
</body>
</html>
However, I can only test it on Windows XP with a Spanish keyboard. My questions:
Is it safe to read e.which? I use it because it e.keyCodeand e.charCodereturn undefinedat least one browser.
Does the operating system affect these numeric codes in any way or only the browser material?
Do these codes match the keyboard layout?
Background information: I could not find the jQuery plugin for repeated numeric keypad , so I write my own.
Update
. .. ,. -. , MS Excel, , . .
script, , . Codes:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head><title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript"><!--
(function($){
$.fn.showKeyCodes = function(){
var log = function(e){
$("<li></li>").text(e.type + "(): [keyCode, charCode, which]=[" + e.keyCode + ", " + e.charCode + ", " + e.which + "]").appendTo("#log");
}
this.live("keydown", function(e){
log(e);
}).live("keypress", function(e){
log(e);
}).live("keyup", function(e){
log(e);
});
return this;
};
$(function(){
$('<ol id="log"></ol>').appendTo("body");
});
})(jQuery);
jQuery(function($){
$(".showKeyCodes input:text, .showKeyCodes textarea").css("border", "1px solid black").showKeyCodes();
});
</script>
</head>
<body>
<form action="" method="get" class="showKeyCodes" size="20">
<p><input type="text"></p>
<p><textarea rows="3" cols="30"></textarea></p>
</form>
</body>
</html>
. ( ) , . , , , .