求助一道面试题

[erwin985211]

// 实现一个 Test，可以按照以下方式调用
Test('tom') 
//  hi, tom
Test('tom').sleep(5).eat('dinner') 
// hi, tom // 等待 5s // weak up 5 // eat dinner
Test('tom').eat('dinner').eat('supper') 
//  hi, tom  // eat dinner // eat super
Test('tom').sleepFirst(5).eat('supper') 
// 等待 5s // wake up 5 // hi, tom //  eat super

[DGideas]

老哥，要求什么编程语言都没写，就放一道“面试题”在这里让大家随便帮你做，逗虫子呢？

[renmu123]

你就查一下怎么实现链式调用

[CEBBCAT]

简单的链式调用。Test() 返回一个指针，给指针定义 sleep eat sleepFirst 方法即可，这些方法同时也要返回传入的指针

[eason1874]

好消息！ V2EX 和 Google 合作了！复制代码到搜索引擎，点击搜索就可以看到问题解析！

https://www.google.com/search?q=sleepFirst%285%29.eat%28%27supper%27%29+

[belowfrog]

function Test(name) {
const queue = [() => console.log(name)];

const result = {
sleepFirst,
sleep,
eat,
};

async function execute() {
while (queue.length) {
const fn = queue.shift();
await Promise.resolve(fn());
}
}

function sleepFirst(time) {
queue.unshift(
() =>
new Promise((resolve) => {
setTimeout(resolve, time * 1000);
})
);

return result;
}

function eat(food) {
queue.push(() => console.log(food));
return result;
}

function sleep(time) {
queue.push(
() =>
new Promise((resolve) => {
setTimeout(resolve, time * 1000);
})
);
return result;
}

Promise.resolve().then(() => execute());

return result;
}

[suntorrent]

这是考察啥？

[erwin985211]

@belowfrog 谢谢老哥，现在我处于有点想法但是写不出来的阶段