Javascript如何将带有值的对象转换为键值对的对象

Question

如何将set只有值的对象转换为键值对包含相同值的对象key？

let set = new Set()
set.add(a)
set.add(example)
console.log(set)
//OUTPUT {"a", "example"}

//perform some operation to get result below ?

到

{"a":"a","example":"example"}

Answer 1

Set 有一个条目方法，您可以将其传递给Object.fromEntries

let set = new Set();
set.add("a");
set.add("example");

const result = Object.fromEntries(set.entries());

console.log(result);