SOURCE

const obj = { a: 1, b: 2, c: 3, d: 4 }
console.log(JSON.stringify(obj))
// 将此对象转换成一个集合[{text:1,value:'a'},{text:2,value:'b'}...]
console.log(Object.entries(obj))

const ret = Object.entries(obj).map(v => {
    return {
        text: v[1],
        value: v[0]
    }
})
console.log(ret)

const obj1 = ret.reduce((acc, v) => {
    acc[v.value] = v.text
    return acc
}, {})
console.log(obj1)