javascript - 如何获取键值，无论它位于数组中的哪个位置

Question

捕获这个slice_type:部分。无论它在数组的哪个位置， 所以这里是 [1]，但也可以是 [0] 或 [2]。最后我需要获取具有 slice_type: 'section'; 的对象中的项目键；

  [ { slice_type: 'structure',
        slice_label: null,
        items: [ [Object] ],
        primary: {} },
      { slice_type: 'section', << Grab this slice_type section. No matter where it's in the array,
 so here its [1], but it could be [0] or [2]. in the end I need to grab the items key that are in the object that has slice_type: 'section';
        slice_label: null,
        items:
         [ [Object],
           [Object],
           [Object],
           [Object],
           [Object],
           [Object],
           [Object] ], <<- get this array of values
        primary: { headline: [Array] } }

Answer 1

您可以使用过滤器和映射数组函数。

let result = arrays
.filter((obj) => obj["slice_type"] === "section") // filter by condition
.map(obj => obj.items);// return items of objects in filtered list