Created
January 29, 2013 15:41
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disable-enable-scroll.js
by http://stackoverflow.com/a/4770179
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// left: 37, up: 38, right: 39, down: 40, | |
// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36 | |
var keys = [37, 38, 39, 40]; | |
function preventDefault(e) { | |
e = e || window.event; | |
if (e.preventDefault) | |
e.preventDefault(); | |
e.returnValue = false; | |
} | |
function keydown(e) { | |
for (var i = keys.length; i--;) { | |
if (e.keyCode === keys[i]) { | |
preventDefault(e); | |
return; | |
} | |
} | |
} | |
function wheel(e) { | |
preventDefault(e); | |
} | |
function disable_scroll() { | |
if (window.addEventListener) { | |
window.addEventListener('DOMMouseScroll', wheel, false); | |
} | |
window.onmousewheel = document.onmousewheel = wheel; | |
document.onkeydown = keydown; | |
} | |
function enable_scroll() { | |
if (window.removeEventListener) { | |
window.removeEventListener('DOMMouseScroll', wheel, false); | |
} | |
window.onmousewheel = document.onmousewheel = document.onkeydown = null; | |
} |
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