如何循环对象并将键值推入键值对象

Question

I dont know, how to loop an object and push his key and value into a key-value object. now I give you an example.

input object looks like this:

{a: 1, b:2, c:3}

and the output object array should be look like this:

[{key: a, value: 1}{key: b, value 2} {key: c, value: 3}]

any solutions?

Answer 1

new Map(Object.entries({a: 1, b:2, c:3}));

Answer 2

It is possible to use Object.entries method:

Object.entries(obj).map(([k, v])=> ({key: k, value: v}));

An example:

 let obj = {a: 1, b:2, c:3}; const result = Object.entries(obj).map(([k, v])=> ({key: k, value: v})); console.log(result);

As mdn says:

The Object.entries() method returns an array of a given object's own enumerable string-keyed property [key, value] pairs, in the same order as that provided by a for...in loop.

Answer 3

一个简短的方法

Object.entries(obj).map(([key, value])=> ({key, value}));