SOURCE

/**
 * @param {Number} time 传入需要等待时间的值
 */
async function sleep(time) {
    return new Promise((resolve) => {
        setInterval(() => {
            resolve();
        }, time);
    });
}

async function test(){
    console.log("测试")
    while(20--){
        await sleep(1000)
        console.log(1++)
    }
}
test()