René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Null filter not returning anything: filter:{category:null}\"","articleBody":"Dataset:\n\n``` javascript\n$scope.objs = [{name:'obj1', category:null}, {name:'obj2', category:null}, {name:'obj3', category:null}, {name:'obj4', category:1}, {name:'obj5', category:1}, {name:'obj6', category:1}, {name:'obj7', category:2}, {name:'obj8', category:2}, {name:'obj9', category:2}];\n```\n\nWhen i create an ng-repeat like this it returns the expected subset:\nng-repeat=\"obj in objs | filter:{category:1}\"\n\nBut when i do this it does not show anything: (search for null instead of 1)\nng-repeat=\"obj in objs | filter:{category:null}\"\n\nThis behaviour has been tested in 1.1.1 and 1.0.1 on chrome 23.0.1271.97 and IE9.\n\nPlnkr and jsfiddle demo's:\nhttp://plnkr.co/edit/jgfPPE\nhttp://jsfiddle.net/KQYMY/17/\n","author":{"url":"https://github.com/martijnve","@type":"Person","name":"martijnve"},"datePublished":"2013-01-09T10:12:28.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":45},"url":"https://github.com/1780/angular.js/issues/1780"}