我可以只使用扩展和解构赋值来做到这一点吗？

Question

From this array of objects, I would like to create an array of the values of p . ie. ['a', 'b'] .

Can I do this using only spread and destructuring assignment?

const arr = [ {p:'a'}, {p:'b'} ]

e.g.

console.log(...arr.p) // not valid syntax

Answer 1

No, this is not a use case for spread syntax. You should use the map method :

console.log(arr.map(o => o.p))

You can use destructuring in the parameter declaration to access the property, but it won't increase readability:

console.log(arr.map(({p}) => p))

Answer 2

The spread operator is the wrong thing to use in that case.

You should use Array.map instead.

const secondArr = arr.map((object) => object.p);
console.log(secondArr);