javascript - angularjs 中的嵌套循环

Question

我一直在使用嵌套循环访问 json 对象的数据以显示 topping 的 id 和 type，但是它不起作用。这是我的代码:

    var j_obj = {
  "id": "0001",
  "type": "donut",
  "name": "Cake",
  "ppu": 0.55,
  "batters": {
    "batter": [{
      "id": "1001",
      "type": "Regular"
    }, {
      "id": "1002",
      "type": "Chocolate"
    }, {
      "id": "1003",
      "type": "Blueberry"
    }, {
      "id": "1004",
      "type": "Devil's Food"
    }]
  },
  "topping": [{
    "id": "5001",
    "type": "None"
  }, {
    "id": "5002",
    "type": "Glazed"
  }, {
    "id": "5005",
    "type": "Sugar"
  }, {
    "id": "5007",
    "type": "Powdered Sugar"
  }, {
    "id": "5006",
    "type": "Chocolate with Sprinkles"
  }, {
    "id": "5003",
    "type": "Chocolate"
  }, {
    "id": "5004",
    "type": "Maple"
  }]
}
var Outer_log=[];
debugger
angular.forEach(j_obj, function(an_object){
    //Outer_log.push("ID : "+an_object.id+" type : "+an_object.type);
    angular.forEach(an_object.topping,function(innerobject){
    Outer_log.push("ID : "+innerobject.id+" type : "+innerobject.type);
  },Outer_log);
});
console.log(Outer_log);

有人可以指出上面代码中的错误吗，谢谢

Answer 1

不使用嵌套循环，您可以像这样使用 angular.forEach 进行迭代

var finalArray=[];

angular.forEach(j_obj[0].topping, 函数(eachobject){

finalArray.push("ID : "+ eachobject.id+" type : "+ eachobject.type);

});