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    copied!<p>You should bind scroll event to document as document is the element that is scrolling. Then you can detect the <code>scrollTop</code> of document and compare with the offset of the repeating items.</p> <p>JSFiddle Demo: <a href="http://jsfiddle.net/daiweilu/nzBS5/2/" rel="nofollow">http://jsfiddle.net/daiweilu/nzBS5/2/</a></p> <p>I only use jQuery and Angular 1.2.6. Basically I tested the top border of ng-repeat item against window top border. If an item starts to leave window, the function on ng-repeat item is executed once. If the item came back and leave again, the function will be triggered again.</p> <p>HTML</p> <pre><code>&lt;div ng-controller="MyCtrl" scrollable-container&gt; &lt;div ng-repeat="article in articles" class="block" scrollable-item="atNewArticle(article)"&gt; &lt;h1&gt;{{article.title}}&lt;/h1&gt; &lt;p&gt;{{article.body}}&lt;/p&gt; &lt;/div&gt; &lt;/div&gt; </code></pre> <p>JS var app = angular.module('myApp', []);</p> <pre><code>app.directive('scrollableContainer', function($window, $document) { return { link: function(scope, element, attrs) { angular.element($document).on('scroll', function() { var children = element.children(); var $leftChild; for (var i = 0; i &lt; children.length; i++) { var $child = $(children[i]); var childTop = $child.offset().top; var docScrollTop = $document.scrollTop(); var scope = $child.scope(); if (childTop - docScrollTop &lt; 0) { if (!scope._left) { scope._left = true; $leftChild = $child; } } else { delete scope._left; } } if ($leftChild) { $leftChild.scope().$eval( $leftChild.attr('scrollable-item') ); } }); } }; }); function MyCtrl($scope) { $scope.articles = [ {title:'article1',body:'body of article1'}, {title:'article2',body:'body of article2'}, {title:'article3',body:'body of article3'} ]; $scope.atNewArticle = function (article) { //i only execute when transitioning back and forth between articles console.log(article); }; } </code></pre>
 

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