Question

如何使用以下JSON数据显示商店，书签，收藏夹

JSON数据（vm.bookmarks）：

[
    {
        "category": "stores",
        "title": "store1",
        "link": "http://www.store1.com",
    },
    {
        "category": "stores",
        "title": "store1",
        "link": "http://www.store2.com",
    },
    {
        "category": "bookmarks",
        "title": "bookmark1",
        "link": "http://www.bookmark1.com",
    },
    {
        "category": "bookmarks",
        "title": "bookmark2",
        "link": "http://www.bookmark2.com",
    },
    {
        "category": "bookmarks",
        "title": "bookmark3",
        "link": "http://www.bookmark3.com",
    },
    {
        "category": "favorites",
        "title": "favorites1",
        "link": "http://www.favorites1.com",
    },
    {
        "category": "favorites",
        "title": "favorites2",
        "link": "http://www.favorites2.com",
    }
]

我只想列出类别＆＃39;名字使用ng-repeat：

<div ng-repeat="item in vm.bookmarks|groupBy:'category'">
    <h2>{{item.category}}</h2>
</div>

我想要显示：

存储
书签
收藏夹

但它什么都没显示！我做错了什么？

P.S

我使用过滤器而没有注入任何东西，比如：

<div ng-repeat="item in vm.bookmarks|filter:{category:'flyers'}" >
    <a href="{{item.link}}">{{item.title}}</a>
</div>

我不确定是否需要注入角度过滤器以使用groupBy过滤器 - 为什么？

Answer 1

您不需要使用 (key, value) ，也需要将angular.filter作为依赖项注入

var MyApp = angular.module("MyApp",['angular.filter']);

<ul class="nav nav-tabs" data-tabs="tabs" 
    ng-repeat="bookmark in vm.bookmarks|groupBy:'category'">
    <li><a href="@tabid" data-toggle="tab">{{bookmark.category}}</a></li>
</ul>

<强>样本

＆＃13;

var app = angular.module("myApp", ['angular.filter']);
app.controller("SimpleController", function($scope) {
  this.bookmarks = [
    {
        "category": "stores",
        "title": "store1",
        "link": "http://www.store1.com",
    },
    {
        "category": "stores",
        "title": "store1",
        "link": "http://www.store2.com",
    },
    {
        "category": "bookmarks",
        "title": "bookmark1",
        "link": "http://www.bookmark1.com",
    },
    {
        "category": "bookmarks",
        "title": "bookmark2",
        "link": "http://www.bookmark2.com",
    },
    {
        "category": "bookmarks",
        "title": "bookmark3",
        "link": "http://www.bookmark3.com",
    },
    {
        "category": "favorites",
        "title": "favorites1",
        "link": "http://www.favorites1.com",
    },
    {
        "category": "favorites",
        "title": "favorites2",
        "link": "http://www.favorites2.com",
    }
];
var vm = this;
  
});

＆＃13;

<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-filter/0.5.16/angular-filter.js" > </script>
<body ng-app="myApp">
    <div>
      <div data-ng-controller="SimpleController as vm">
      <ul class="nav nav-tabs" data-tabs="tabs" 
    ng-repeat="(key, value) in (vm.bookmarks|groupBy:'category')">
    <div ng-repeat="cat in value | unique:'category' ">
          <h1> {{cat.category}}</h1>
    </div>
  </ul>
        </div>
    </div>
</body>

</html>

＆＃13;

AngularJS ng-repeat从JSON数据中显示组名

1 个答案: