动态过滤嵌套 JavaScript 对象数组中的数据

Question

我有一个动态数组var arr = ["key1","key2","key3"]我想用这个数组过滤一个对象数组，例如，

var obj = [{"key1":{"key2":{"key3":5}}},{"key1":{"key2":{"key3":7}}},{"key1":{"key2":{"key3":8}}}] 

"key3"等于 5。我如何使用vanilla javascript实现这一点？

Answer 1

您可以减少对象的键并返回值以进行检查。

var getValue = (keys, object) => keys.reduce((o, k) => o[k], object),
keys = ["key1", "key2", "key3"],
array = [{ key1: { key2: { key3: 5 } } }, { key1: { key2: { key3: 7 } } }, { key1: { key2: { key3: 8 } } }],
result = array.filter(o => getValue(keys, o) === 5);
console.log(result);

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