/** | |
* cbpAnimatedHeader.js v1.0.0 | |
* http://www.codrops.com | |
* | |
* Licensed under the MIT license. | |
* http://www.opensource.org/licenses/mit-license.php | |
* | |
* Copyright 2013, Codrops | |
* http://www.codrops.com | |
*/ | |
var cbpAnimatedHeader = (function() { | |
var docElem = document.documentElement, | |
header = document.querySelector( '.cbp-af-header' ), | |
didScroll = false, | |
changeHeaderOn = 300; | |
function init() { | |
window.addEventListener( 'scroll', function( event ) { | |
if( !didScroll ) { | |
didScroll = true; | |
setTimeout( scrollPage, 250 ); | |
} | |
}, false ); | |
} | |
function scrollPage() { | |
var sy = scrollY(); | |
if ( sy >= changeHeaderOn ) { | |
classie.add( header, 'cbp-af-header-shrink' ); | |
} | |
else { | |
classie.remove( header, 'cbp-af-header-shrink' ); | |
} | |
didScroll = false; | |
} | |
function scrollY() { | |
return window.pageYOffset || docElem.scrollTop; | |
} | |
init(); | |
})(); |
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chrisenytc commentedMay 8, 2014
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