移動端Ionic App 資訊上下循環(huán)滾動的實現(xiàn)代碼(跑馬燈效果)

angular.module('starter') 
 .directive('slideScroll', function ($window, $timeout) { 
 return { 
 restrict: 'AE', 
 link: function (scope, element, attr) { 
 var _scrollHeight = 40; 
 var _newsLen = 3; 
 var index = 0; 
 setInterval(function () { 
  index += 1; 
  if (index > _newsLen) { 
  index = 0; 
  $(".news-right ul").css({ 
  top: 0 
  }) 
  } else { 
  $(".news-right ul").animate({ 
  top: -_scrollHeight * index - 10 * index 
  }, 500); 
  } 
 }, 2000) 
 } 
 }; 
 }); 

<div class="news-right" ui-sref="newsList"> 
 <ul slide-scroll> 
 <li class="news-box" ng-repeat="row in dataArr"> 
 <p ng-repeat="item in row">{{item.title.length <= 19 ? item.title : item.title.slice(0, 19) + '...'}}</p> 
 </li> 
 <li> 
  <p ng-repeat="item1 in dataArr[0]">{{item1.title.length <= 19 ? item1.title : item1.title.slice(0, 19) + '...'}}</p> 
 </li> 
 </ul> 
</div> 

 .news-right { 
 position: absolute; 
 height: 40px; 
 left: 100px; 
 top: 10px; 
 right: 0; 
 color: rgb(65, 65, 65); 
 overflow: hidden; 
} 
.news-right ul{ 
 width: 100%; 
 position: absolute; 
 top: 0; 
 left: 0; 
} 
.news-right p { 
 padding: 0; 
 line-height: 15px; 
 text-overflow: ellipsis; 
 box-sizing: border-box; 
 white-space: nowrap; 
 font-size: 13px; 
}