Question

我有一个基于问题数组预先填充长度的答案数组

 $scope.length = parseInt($scope.questions.length);
     $scope.quizAnswers = [];
     for(var i = 0 ; i < parseInt($scope.length) ; i++)
          $scope.quizAnswers.push({id:i, Index:i,  Answered":"No","Correct":"null"});

我希望将此答案数组中的对象替换为其索引值根据答案

quizAnswers: [{"id":0,"Index":0,"Answered":"No","Correct":"null"},{"id":1,"Index":1,"Answered":"No","Correct":"null"},{"id":3,"Index":3,"Answered":"No","Correct":"null"},{"id":0,"Index":2,"Answered":"Yes","Correct":"Correct"}]

所以最终的对象{"id":0,"Index":2,"Answered":"Yes","Correct":"Correct"}需要替换{"id":2,"Index":2,"Answered":"No","Correct":"null"}，有没有办法通过推送或拼接到数组

Answer 1

数组基于索引。所以这意味着您可以通过索引

访问该值

quizAnswers = [
      {"id":0,"Answered":"No","Correct":"null"},
      {"id":1,"Answered":"No","Correct":"null"},
      {"id":3,"Answered":"No","Correct":"null"},
      {"id":0,"Answered":"Yes","Correct":"Correct"}
];

quizAnswers[2] = {"id":2,"Answered":"Yes","Correct":"Correct"};

Answer 2

将答案作为对象而不是数组可能更容易。然后，您可以使用索引作为键。例如：

quizAnswers = {
    "0": {"id":0,"Answered":"No","Correct":"null"},
    "1": {"id":1,"Answered":"No","Correct":"null"},
    "3": {"id":3,"Answered":"No","Correct":"null"},
    "2": {"id":0,"Answered":"Yes","Correct":"Correct"}
}

这将允许您直接更新答案。例如：

quizAnswers["2"] = {"id":0,"Answered":"Yes","Correct":"Correct"};

AngularJS替换数组对象

2 个答案: