Javascript json数据分组

如果以前有人问过这个问题，我很抱歉，但是我找不到一个很好的例子来说明我正在努力实现的目标。也许我只是没有在寻找正确的东西。如果有什么解释，请纠正我。无论如何

我有这样的JSON数据结构

{"Result":[
    {"Level":"ML","TeamName":"Team 1","League":"League 1"},
    {"Level":"ML","TeamName":"Team 2","League":"League 2"},
    {"Level":"ML","TeamName":"Team 3","League":"League 3"},
    {"Level":"3A","TeamName":"Team 4","League":"League 1"},
    {"Level":"3A","TeamName":"Team 5","League":"League 2"},
    {"Level":"3A","TeamName":"Team 6","League":"League 3"},
    {"Level":"2A","TeamName":"Team 7","League":"League 1"},
    {"Level":"2A","TeamName":"Team 8","League":"League 2"},
    {"Level":"2A","TeamName":"Team 9","League":"League 3"},
]}

{"Result":[
    {"ML":[
        {"TeamName":"Team 1","League":"League 1"},
        {"TeamName":"Team 2","League":"League 2"},
        {"TeamName":"Team 3","League":"League 3"}
    ]},
    {"3A":[
        {"TeamName":"Team 4","League":"League 1"},
        {"TeamName":"Team 5","League":"League 2"},
        {"TeamName":"Team 6","League":"League 3"}
    ]},
    {"2A":[
        {"TeamName":"Team 7","League":"League 1"},
        {"TeamName":"Team 8","League":"League 2"},
        {"TeamName":"Team 9","League":"League 3"}
    ]}
]}

我想分组，或者像这样重组它

{"Result":[
    {"Level":"ML","TeamName":"Team 1","League":"League 1"},
    {"Level":"ML","TeamName":"Team 2","League":"League 2"},
    {"Level":"ML","TeamName":"Team 3","League":"League 3"},
    {"Level":"3A","TeamName":"Team 4","League":"League 1"},
    {"Level":"3A","TeamName":"Team 5","League":"League 2"},
    {"Level":"3A","TeamName":"Team 6","League":"League 3"},
    {"Level":"2A","TeamName":"Team 7","League":"League 1"},
    {"Level":"2A","TeamName":"Team 8","League":"League 2"},
    {"Level":"2A","TeamName":"Team 9","League":"League 3"},
]}

{"Result":[
    {"ML":[
        {"TeamName":"Team 1","League":"League 1"},
        {"TeamName":"Team 2","League":"League 2"},
        {"TeamName":"Team 3","League":"League 3"}
    ]},
    {"3A":[
        {"TeamName":"Team 4","League":"League 1"},
        {"TeamName":"Team 5","League":"League 2"},
        {"TeamName":"Team 6","League":"League 3"}
    ]},
    {"2A":[
        {"TeamName":"Team 7","League":"League 1"},
        {"TeamName":"Team 8","League":"League 2"},
        {"TeamName":"Team 9","League":"League 3"}
    ]}
]}

---

如何使用Javascript/jQuery实现这一点？很遗憾，我无法编辑服务器发送给我的内容。

只需在对象中跟踪所有内容：

let groups = Object.create(null);

data.forEach(item => {
    if (!groups[item.Level]) {
        groups[item.Level] = [];
    }

    groups[item.Level].push({
        TeamName: item.TeamName,
        League: item.League
    });
});

let result =
    Object.entries(groups)
        .map(([k, v]) => ({[k]: v}));

---

这是一个小问题……将JSON转换为一个对象，将相关部分复制到另一个对象，然后将第二个对象转换为JSON。你可以做到。@JonathanM最后一步可能根本就没有必要，因为假设他们在某个时候真的想对这个对象做点什么。老实说，我还没怎么试过。我在想该怎么做。我不知道是否必须为此使用循环和$.grep（）的组合。任何指导或帮助都很好。您的for循环（和下一行）是否可以简化为

for（数据中的项）

？@TimothyAaron:不，JavaScript的

for in

循环迭代键，而不是值，您不应该使用它来迭代数组。因此，我们仍在等待

的广泛采用，因为每个
：DHe说他正在使用jQuery，所以您可以使用$。each。@Julian:好的，谢谢；我要补充一点。那太好了……非常感谢你的一些想法。