将JavaScript对象的可变长度的对象属性连接到该对象的新属性中 [英] Concatenate object's properties of variable length of a JavaScript object into a new property of the object

问题描述

我有这个复杂的对象结构:

I have this complicated object structure:

myObject = {
    "myObject" : [
        {
            "id" : 1,
            "parameters" : [
                {
                    "name" : "name1",
                    "special" : "xxx"
                },
                {
                    "name" : "name2",
                    "special" : "yyy"           
                }
            ]
        },
        {
            "id" : 2,
            "parameters" : [
                {
                    "name" : "name3",
                    "special" : "zzz"
                }
            ]
        },
        {
            "id" : 2,
            "parameters" : [
                {
                    "name" : "name4",
                    "special" : "ttt"
                },
                {
                    "name" : "name5",
                    "special" : "aaa"
                },
                {
                    "name" : "name6",
                    "special" : "zzz"
                }
            ]
        },
        ...
    ]
};

它由一系列其他对象组成，每个对象具有可变数量的 parameters .

It consists of a array of other objects, each of them having a variable number of parameters.

我的目标是将每个对象的参数的 special 连接成一个新的字符串，该字符串必须作为它的新属性存储.

My goal is to concatenate the special of parameters of each object into a new string which must be stored as new property of it.

在这种情况下，结果应如下所示:

In this case, the result should look like:

myObject = {
    "myObject" : [
        {
            "id" : 1,
            "parameters" : [
                {
                    "name" : "name1",
                    "special" : "xxx"
                },
                {
                    "name" : "name2",
                    "special" : "yyy"           
                }
            ],
            "newProp" : "xxxyyy"
        },
        {
            "id" : 2,
            "parameters" : [
                {
                    "name" : "name3",
                    "special" : "zzz"
                }
            ],
            "newProp" : "zzz"
        },
        {
            "id" : 2,
            "parameters" : [
                {
                    "name" : "name4",
                    "special" : "ttt"
                },
                {
                    "name" : "name5",
                    "special" : "aaa"
                },
                {
                    "name" : "name6",
                    "special" : "zzz"
                }
            ],
            "newProp" : "tttaaazzz"
        },
        ...
    ]
};

我尝试过这样的事情:

forEach(arr in myObject.myObject){
    arr.parameters(forEach (i in arr.parameters.special) {
    myObject.myObject = i.concat(myObject.myObject);
  })
}

显然，它不起作用.但是我想这可能是正确的方法.

obviously, it does not work. But I guess that this could be the right approach.

有什么建议吗?

推荐答案

为每个对象使用reduce和

Use reduce and for Each

var myObject = {
    "myObject" : [
        {
            "id" : 1,
            "parameters" : [
                {
                    "name" : "name1",
                    "special" : "xxx"
                },
                {
                    "name" : "name2",
                    "special" : "yyy"           
                }
            ]
        },
        {
            "id" : 2,
            "parameters" : [
                {
                    "name" : "name3",
                    "special" : "zzz"
                }
            ]
        },
        {
            "id" : 2,
            "parameters" : [
                {
                    "name" : "name4",
                    "special" : "ttt"
                },
                {
                    "name" : "name5",
                    "special" : "aaa"
                },
                {
                    "name" : "name6",
                    "special" : "zzz"
                }
            ]
        }
    ]
};

myObject.myObject.forEach(arr => {
 arr.prop = arr.parameters.reduce((res,obj)=> res+obj.special, '')
})

console.log(myObject)

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