AngularjsでJSONをランダム化する方法

Question

anglejsで次のJSONをランダム化するにはどうすればよいですか？あなたが質問をランダム化することができますので、

{ 
    "1": { 
      "id": "1", 
      "que": "Grand Central Terminal, Park Avenue, New York is the world's", 
      "options": { 
       "A": "largest railway station", 
       "B": "highest railway station", 
       "C": "longest railway station", 
       "D": "None of the above" 
      }, 
      "ans": "A" 
     }, 
"2": { 
      "id": "2", 
      "que": "Entomology is the science that studies", 
      "options": { 
       "A": "Behavior of human beings", 
       "B": "Insects", 
       "C": "The origin and history of technical and scientific terms", 
       "D": "The formation of rocks" 
      }, 
      "ans": "B" 
     }, 
"3": { 
      "id": "3", 
      "que": "Eritrea, which became the 182nd member of the UN in 1993, is in the continent of", 
      "options": { 
       "A": "Asia", 
       "B": "Africa", 
       "C": "Europe", 
       "D": "Australia" 
      }, 
      "ans": "B" 
     } 
} 

Answer 1

をあなたのタスクを簡単に私はあなたが使用を示唆しているようにするにはこのようなオブジェクトの配列：

var questions= 
[ 
    { 
     "id": "1", 
     "que": "Grand Central Terminal, Park Avenue, New York is the world's", 
     "options": { 
      "A": "largest railway station", 
      "B": "highest railway station", 
      "C": "longest railway station", 
      "D": "None of the above" 
     }, 
     "ans": "A" 
    }, 
    { 
     "id": "2", 
     "que": "Entomology is the science that studies", 
     "options": { 
      "A": "Behavior of human beings", 
      "B": "Insects", 
      "C": "The origin and history of technical and scientific terms", 
      "D": "The formation of rocks" 
     }, 
     "ans": "B" 
    }, 
    { 
     "id": "3", 
     "que": "Eritrea, which became the 182nd member of the UN in 1993, is in the continent of", 
     "options": { 
      "A": "Asia", 
      "B": "Africa", 
      "C": "Europe", 
      "D": "Australia" 
     }, 
     "ans": "B" 
    } 
] 

そして、t oランダムな質問を使用する：

$scope.randomQuestion = questions[Math.floor(Math.random()*questions.length)]; 

Answer 2

一つの解決策は、あなたの質問は、配列へのオブジェクトに変換することです注文：

http://plnkr.co/edit/PSeh0BLNjK5ydXJrLguw?p=preview

<p ng-repeat="q in questionsArray | orderBy: random">{{q.key}} - {{q.val.que}}</p>