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