Question

我有以下JSON对象：

var data = [
    {
        "re_ID": "15.02",
        "date": "20.01.2016",
        "name": "Opening",
        "booking_ID": "4343",
        "source": "int",
        "meaning": "high",
        "date_booking": "31.05.2018"
    },
    {
        "re_ID": "15.02",
        "date": "20.01.2016",
        "name": "Opening",
        "booking_ID": "333",
        "source": "int",
        "meaning": "high",
        "date_booking": "31.04.2018"
    },
    {
        "re_ID": "15.02",
        "date": "20.01.2016",
        "name": "Opening",
        "booking_ID": "434311",
        "source": "int",
        "meaning": "high",
        "date_booking": "31.01.2018"
    },
    {
        "re_ID": "99.33",
        "date": "11.08.2013",
        "name": "medium",
        "booking_ID": "5411",
        "source": "ext",
        "meaning": "low",
        "date_booking": "11.11.2017"
    }
]

我需要将其转换为嵌套格式，如下例所示，我可以使用双循环遍历它以从第一个维度获取数据，而使用第二个循环我可以获得第二个维度的信息它：

我需要的结构：

var data = [
    {
        "re_ID": "15.02",
        "date": "20.01.2016",
        "name": "Opening"
    },
    {
        "booking_ID": "4343",
        "source": "int",
        "meaning": "high",
        "date_booking": "31.05.2018"
    },
    {
        "booking_ID": "333",
        "source": "int",
        "meaning": "high",
        "date_booking": "31.04.2018"
    },
    {
        "booking_ID": "434311",
        "source": "int",
        "meaning": "high",
        "date_booking": "31.01.2018"
    },
    {
        "re_ID": "99.33",
        "date": "11.08.2013",
        "name": "medium"
    },
    {
        "booking_ID": "5411",
        "source": "ext",
        "meaning": "low",
        "date_booking": "11.11.2017"
    }
];

如何从第一个JSON

构建第二个JSON

Answer 1

好吧，我假设您想要输出的结构实际上并不是您想要的结构，而是将子对象放入数组中。

我还假设如果re_ID相同，那么日期和名称也是一样的。

您只需循环数据数组，然后通过re_ID对转换后的子对象进行分组。完成后，将收集器对象转换回数组：

（注意，如果你需要支持IE，你需要为Array.includes（）提供polyfill

function transformJSON(data) {
    var collector = {};
    var ids = [];

    for (var i = 0; i < data.length; i++) {
        var reid = data[i].re_ID;
        if (!ids.includes(reid)) {
            collector[reid] = {
                re_ID: reid,
                date: data[i].date,
                name: data[i].name,
                items: []
            };

            ids.push(reid);
        }

        collector[reid].items.push({
            booking_ID: data[i].booking_ID,
            source: data[i].source,
            meaning: data[i].meaning,
            date_booking: data[i].date_booking
        });
    }

    var output = [];
    for (var i = 0; i < ids.length; i++) {
        output.push(collector[ids[i]]);
    }

    return output;
}

将JSON文件拆分为两个并在Javascript中创建二维数组？

1 个答案: