Last active
September 25, 2015 03:01
-
-
Save dboutote/e1072c69a12a2455ca39 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
function findMiddleDiv(){ | |
var scrollTop = $(window).scrollTop(); | |
var winHeight = $(window).height(); | |
var middleHeight = winHeight / 2; | |
var visibleElements = $('.platform-section'); | |
var $midElement = visibleElements.eq(0); | |
var targetId, | |
targetLink; | |
var elementOffset, | |
distanceFromTop = 0, | |
currentDistance = 0; | |
visibleElements.each(function(index, element) { | |
elementOffset = $(this).offset().top; | |
distanceFromTop = ( elementOffset - scrollTop ); | |
if( distanceFromTop <= middleHeight) { | |
$midElement = $(element); | |
platformPager.addClass("stick"); | |
currentDistance = distanceFromTop; | |
} | |
}); | |
if( currentDistance == 0 ){ | |
platformPager.removeClass("stick"); | |
} | |
targetId = $midElement.attr('id'); | |
targetLink = $('a[data-target="#'+targetId+'"]'); | |
targetLink.addClass('active').parent('li').siblings().children('.pager-link').removeClass('active'); | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment