Question

我是Javascript的初学者。我正在使用具有两个JSON数组的Javascript创建项目：

 var interfaces = [
                {id:'123123-12-31-23',mac:'234',flowid:'1',status:'deployed'},
                {id:'456456-12-31-23',mac:'45645',flowid:'2',status:'deployed'},
                {id:'123123-12-31-234',mac:'45',flowid:'3',status:'deployed'},
                {id:'456456-12-31-234',mac:'89',flowid:'4',status:'deployed'}
            ];

    var reorderedInterfaces =   [

                {id:'456456-12-31-23',mac:'45645',flowid:'2',status:'deployed'},
                {id:'456456-12-31-234',mac:'89',flowid:'4',status:'deployed'},
                {id:'123123-12-31-234',mac:'45',flowid:'3',status:'deployed'},
                {id:'123123-12-31-23',mac:'234',flowid:'1',status:'deployed'},
            ];

我需要以下输出：

var finalOutput = {
    1:2,
    2:4,
    3:3,
    4:1
}

这是我的代码：

var obj = {}
    for(i=0; i<interfaces.length; i++){
        console.log()
        for(j=0; j<reorderedInterfaces.length; j++){
            obj[interfaces[i].flowid] = reorderedInterfaces[j].flowid
            break;
        }

    }   
    console.log(obj)

这给了我错误的输出

Answer 1

只需在迭代器i和j具有相同值时分配值。

List

＆＃13;

List<MyObject> objList = ...;
objList.forEach(e -> transform(e, e.getUuid()));
return objList;

＆＃13;

Answer 2

您只需要一个循环并使用相同的索引。

var interfaces = [{ id: '123123-12-31-23', mac: '234', flowid: '1', status: 'deployed' }, { id: '456456-12-31-23', mac: '45645', flowid: '2', status: 'deployed' }, { id: '123123-12-31-234', mac: '45', flowid: '3', status: 'deployed' }, { id: '456456-12-31-234', mac: '89', flowid: '4', status: 'deployed' }],
    reorderedInterfaces = [{ id: '456456-12-31-23', mac: '45645', flowid: '2', status: 'deployed' }, { id: '456456-12-31-234', mac: '89', flowid: '4', status: 'deployed' }, { id: '123123-12-31-234', mac: '45', flowid: '3', status: 'deployed' }, { id: '123123-12-31-23', mac: '234', flowid: '1', status: 'deployed' }, ],
    result = {};

interfaces.forEach(function (a, i) {
    result[a.flowid] = reorderedInterfaces[i].flowid;
});

console.log(result);

Answer 3

从

更改您的代码

var obj = {}
    for(i=0; i<interfaces.length; i++){
        for(j=0; j<reorderedInterfaces.length; j++){
            if(i==j){
               obj[interfaces[i].flowid] = reorderedInterfaces[j].flowid;
            }
        }

    }

到

@ResponseBody

表示预期输出。希望这可以帮助你

更改JSON对象Array的顺序

3 个答案: