角JS - 滚动$窗口 [英] Angular JS - Scroll $window

问题描述

好吧，我有点难倒。

我想觉得从一个jQuery背景的角度的方式。

I'm trying to think the angular way coming from a jQuery background.

问题：
我只是想隐藏一个固定的元素，如果不滚动的窗口。如果有人向下滚动页面，我想隐藏的元素。

The problem: I'd just like to hide a fixed element if the window is not scrolled. If someone scrolls down the page I would like to hide the element.

我试图创建一个自定义的指令，但我不能得到它的工作作为滚动事件无法。我想一个简单的控制器像下面，但它甚至犯规运行。

I've tried creating a custom directive but I couldnt get it to work as the scroll events were not firing. I'm thinking a simple controller like below, but it doesnt even run.

控制器：

.controller('MyCtrl2', function($scope,appLoading, $location, $anchorScroll, $window ) {
   angular.element($window).bind("scroll", function(e) {
       console.log('scroll')
       console.log(e.pageYOffset)
       $scope.visible = false;
   })
})

查看

<a ng-click="gotoTop()" class="scrollTop" ng-show="{{visible}}">TOP</a>

LIVE preVIEW
<一href=\"http://www.thewinetradition.com.au/new/#/portfolio\">http://www.thewinetradition.com.au/new/#/portfolio

任何意见将大大AP preciated。

Any ideas would be greatly appreciated.

推荐答案

一个基本指示是这样的。其中关键的一点是，你需要调用范围。$适用（），因为滚动将外部运行正常的消化周期。

A basic directive would look like this. One key point is you'll need to call scope.$apply() since scroll will run outside of the normal digest cycle.

app = angular.module('myApp', []);
app.directive("scroll", function ($window) {
    return function(scope, element, attrs) {
        angular.element($window).bind("scroll", function() {
            scope.visible = false;
            scope.$apply();
        });
    };
});

我发现这个的jsfiddle这表明它很好 http://jsfiddle.net/88TzF/

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