es6 学习笔记 const 与 async await函数同时使用

const f = () => {
const time = Math.floor(Math.random() * 500 + 500)
    return new Promise((resolve, reject) => {
        setTimeout(() => {
            if(time%2 == 0){
                resolve('成功 偶数')
            }else{
                reject('成功 奇数')
            }
        }, 1000)
    })
} 

const fun = async () => {
    const res = await f()
}