相关疑难解决方法(0)

我试图在AngularJS中创建一个自定义过滤器,它将按特定属性的值过滤对象列表.在这种情况下,我想过滤"极性"属性(可能的值为"正","中性","否定").

这是我没有过滤器的工作代码:

HTML:

<div class="total">
    <h2 id="totalTitle"></h2>
    <div>{{tweets.length}}</div>
    <div id="totalPos">{{tweets.length|posFilter}}</div>
    <div id="totalNeut">{{tweets.length|neutFilter}}</div>
    <div id="totalNeg">{{tweets.length|negFilter}}</div>
</div>

这是JSON格式的"$ scope.tweets"数组:

{{created_at: "Date", text: "tweet text", user:{name: "user name", screen_name: "user       screen name", profile_image_url: "profile pic"}, retweet_count: "retweet count", polarity: "Positive"},
 {created_at: "Date", text: "tweet text", user:{name: "user name", screen_name: "user screen name", profile_image_url: "profile pic"}, retweet_count: "retweet count", polarity: "Positive"},
 {created_at: "Date", text: "tweet text", user:{name: "user name", screen_name: "user screen name", profile_image_url: "profile pic"}, retweet_count: "retweet count", polarity: "Positive"}}

我能想出的最好的过滤器如下:

myAppModule.filter('posFilter', function(){ …