Mega Code Archive
Handle arrow key, control, alt
<![CDATA[
<!--
Example File From "JavaScript and DHTML Cookbook"
Published by O'Reilly & Associates
Copyright 2003 Danny Goodman
-->
function handleArrowKeys(evt) {
evt = (evt) ? evt : ((window.event) ? event : null);
if (evt) {
var top = getElementStyle("moveableElem", "top", "top");
var left = getElementStyle("moveableElem", "left", "left");
var elem = document.getElementById("moveableElem");
switch (evt.keyCode) {
case 37:
elem.style.left = (parseInt(left) - 5) + "px";
break;
case 38:
elem.style.top = (parseInt(top) - 5) + "px";
break;
case 39:
elem.style.left = (parseInt(left) + 5) + "px";
break;
case 40:
elem.style.top = (parseInt(top) + 5) + "px";
break;
}
}
}
document.onkeyup = handleArrowKeys;
----------
function handleAccelerator(evt) {
evt = (evt) ? evt : ((window.event) ? event : null);
if (evt) {
if (evt.keyCode == 80 && evt.ctrlKey && evt.altKey) {
runSpecial();
}
}
}
document.onkeyup = handleAccelerator;
----------
function showHelp(elem) {
var elemID = elem.id;
switch (elemID) {
case "name":
alert("Enter your full name.");
break;
case "email":
alert("We will be contacting you with your access code. \n" +
"Make sure the address is accurate and up to date.");
break;
...
}
}
function handleAccelerator(evt) {
evt = (evt) ? evt : ((window.event) ? event : null);
var elem = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
if (evt) {
// for Ctrl+Alt+F2
if (evt.keyCode == 113 && evt.ctrlKey && evt.altKey) {
showHelp(elem);
}
}
}
document.onkeyup = handleAccelerator;
]]>