javascript - 如何在Javascript中将多个json数组合并为一个数组swift子数组？

Question

我有两个 json 数组:

     1) 
    [
      {
       "userId": 9
      },
      {
       "userId": 14
      }
     ]

     2) 
     [{"role": "1", "group": "3"}, {"role": "1", "group": "2"}] 

我想合并两个数组，如下所示:可以用javascript解决吗？

    [
     {"userId":9,"role":"1","group":"2"},
     {"userId":14,"role":"1","group":"2"}
     {"userId":9,"role":"1","group":"3"},
     {"userId":14,"role":"1","group":"3"}
    ] 

我尝试使用 Let 但是我找不到操作切换子数组的方法:

     let arr1 = 
     [{ "userId": 9 }, { "userId": 14 }]
     let arr2 = [{"role": "1","group": "3"}, {"role": "1","group": "2" }] 

     let result = arr1.map(o => Object.assign(o, ...arr2));

     console.log(result);
    return result;

结果是这样的:

    [{"userId":9,"role":"1","group":"2"},{"userId":14,"role":"1","group":"2"}] 

提前致谢。

Answer 1

您可以将.map()与Object.assign()结合使用:

let arr1 = [{"userId": 9}, {"userId": 14}],
    arr2 = [{"rid": 1}, {"mid": 201}];
     
let result = arr1.map(o => Object.assign(o, ...arr2));

console.log(result);

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