ES2017 keys,values,entries使用

2024-09-24 05:17:26

let {keys, values, entries} = Object;

let obj = { a: 1, b: 2, c: 3 };

for (let key of keys(obj)) {

  console.log(key); // 'a', 'b', 'c'

}

for (let value of values(obj)) {

  console.log(value); // 1, 2, 3

}

for (let [key, value] of entries(obj)) {

  console.log([key, value]); // ['a', 1], ['b', 2], ['c', 3]

}

Object.keys可以省略Object.

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