javascript - 将对象转换为数组并删除对象实例

Question

在此对象数组中，可能(!)存在如下所示的结构错误，我需要纠正这些错误。如您所见，data 应该是一个带有对象的数组。有时它是一个对象，它有一个对象。在此示例中，group 的最后一个元素具有字段“1”，这是错误的。该字段名称可以有不同的名称。我需要删除它。

{
    "group" : [
        {
            "title" : "title 1",
            "data" : [
                {
                    "field 1" : "Lorem ipsum",
                    "field 2" : "dolor"
                },
                {
                    "field 1" : "Lorem ipsum",
                    "field 2" : "dolor"
                },
                {
                    "field 1" : "Lorem ipsum",
                    "field 2" : "dolor"
                }
            ]
        },
        {
            "data" : {  // <-- should be array
                "1" : { // <-- wrong
                    "field 1" : "Lorem ipsum",
                    "field 2" : "dolor"
                }
            }
        }
    ]
}

结果应该是:

{
    "group" : [
        {
            "title" : "title 1",
            "data" : [
                {
                    "field 1" : "Lorem ipsum",
                    "field 2" : "dolor"
                },
                {
                    "field 1" : "Lorem ipsum",
                    "field 2" : "dolor"
                },
                {
                    "field 1" : "Lorem ipsum",
                    "field 2" : "dolor"
                }
            ]
        },
        {
            "data" : [
                {
                    "field 1" : "Lorem ipsum",
                    "field 2" : "dolor"
                }
            ]
        }
    ]
}

Answer 1

var data = {
    "group" : [{
            "title" : "title 1",
            "data" : [
                { "field 1" : "Lorem ipsum" }
            ]
        }, {
            "data" : {
                "1" : { "field 1" : "Lorem ipsum" }
            }
        }
    ]
};

// check each group
data.group.forEach(function (g) {
    // is it an array (simple check for "length" property)
    if (typeof g.data.length === "undefined") {
        // if not, convert "data" to an array and replace it in-place
        g.data = Object.keys(g.data).map(function (d) {
                return g.data[d];
            })
    }
});

console.log(JSON.stringify(data));