javascript - Angular 应用程序读取不规则 json 的功能

Question

我有一个 angularjs 应用程序，它从具有类似于以下结构的 json 读取数据:

[ { "name" : "TIER 1",
        "children" : [ 
            { "children" : [ "ENGL-1301","HIST-1301"],
            },
            { "children" : [ {"children" : [{ "course" : "SPCH 1311","term" : "Spring 2012"} ]}, "SPCH-1311","SPCH-1315","SPCH-1321"],
              "name" : "Speaking and Listening",

            },
            { "children" : [ "MATH-1314","MATH-1414","MATH-1316"],
              "name" : "Quantitative Reasoning", "subcategory2" : [  ]
            },
            { "children" : [ "ARTS-1311","ARTS-1312","ARTS-1313"],
              "name" : "Wellness and The Human Experience","subcategory2" : [  ]
            }
          ]
      },
      { "name" : "TIER 2",
        "children" : [ 
            { "children" : [ {"children" : [{ "course" : "ENGL 1302","term" : "Summer 2012"} ]}, "ENGL-1302" ],
              "name" : "Qualitative Reasoning, Literacy and Research",
            },
            { "children" : [ {"children" : [{ "course" : "GOVT 2301","term" : "Spring 2012"},
                                { "course" : "PSYC 2301","term" : "Summer 2012"} ]}, "HIST-1302","HIST-2301","HIST-2328"],
              "name2" : "Self and Society",
            },
            { "children" : [ "ARTS-1301","ARTS-1303","ARTS-1304","DANC-2303"],
              "name2" : "Humanity, Creativity and the Aesthetic Experience",
            },
          ]
      }
    ]

如您所见，json 文件看起来组织得不好。它有一些带有 children 的元素，这些 children 还有更多名为 children 的元素。因此，为了将此 json 文件读入 Angular 应用程序，我想定义一个名为 isemptychildren() 的函数来检查特定子元素是否有更多子类别。

如果问题变得令人困惑，我深表歉意，但我不知道更好的方法来解释它。我该如何编写这个函数？

Answer 1

适用于所有浏览器的稳健检查是对所有元素递归使用 Object.keys() 函数，例如:

function isEmptyChildren(hash){
    return (Object.keys(hash).indexOf("chidren") == -1) ? true : false;
}

尽管为了您自己的理智着想，我建议您尽可能修改该数据结构，以使用不同的命名约定。