mirror of
https://github.com/KieSun/all-of-frontend.git
synced 2024-11-25 00:08:14 +08:00
243 lines
5.5 KiB
Markdown
243 lines
5.5 KiB
Markdown
# 干爆前端
|
||
|
||
仓库内容分为以下几块:
|
||
|
||
- 每日更新一道大厂原题,第二天公布答案
|
||
- 前端学习路径及包括的各个知识点,每个知识点都有具体文章帮助大家融会贯通
|
||
- 前端 15 万字面试资料
|
||
- 前端进阶好文
|
||
- 各类大厂内推
|
||
|
||
## 目录
|
||
|
||
- [干爆前端](#干爆前端)
|
||
- [目录](#目录)
|
||
- [每日大厂原题](#每日大厂原题)
|
||
- [今日原题](#今日原题)
|
||
- [前端十五万字面试资料](#前端十五万字面试资料)
|
||
- [各类大厂内推](#各类大厂内推)
|
||
|
||
|
||
## 每日大厂原题
|
||
|
||
欢迎大家提供面试题,发送题目至邮箱:zx597813039@gmail.com。
|
||
|
||
成功采纳后,如果你面试遇到其他问题,笔者可以提供免费解答服务。
|
||
|
||
### 今日原题
|
||
|
||
第九题:[修改嵌套层级很深对象的 key](https://github.com/KieSun/fucking-frontend/issues/14)
|
||
|
||
```js
|
||
const a = {
|
||
a_y: {
|
||
a_z: {
|
||
y_x: 6
|
||
},
|
||
b_c: 1
|
||
}
|
||
}
|
||
// {
|
||
// ay: {
|
||
// az: {
|
||
// yx: 6
|
||
// },
|
||
// bc: 1
|
||
// }
|
||
// }
|
||
```
|
||
|
||
第八题:[对一个很长的名字数组,做分片更新名字请求](https://github.com/KieSun/fucking-frontend/issues/13)
|
||
|
||
```js
|
||
/*
|
||
* 对一个很长的名字数组,做分片更新名字请求:
|
||
* 1. 分片里的更新是并行的,执行 changeName
|
||
* 2. 各个分片间是串行的,执行 sleep
|
||
* 这个函数接受三个参数,名字列表、分片数量,每次分片后的等待时间
|
||
* 比如:
|
||
* slicePostTask(['aa', 'bb', 'cc', 'dd', 'ee', 'ff', 'gg', 'hh'], 2, 2000)
|
||
* // => ['aa', 'bb']
|
||
* waiting 2s
|
||
* // => ['cc', 'dd']
|
||
* waiting 2s
|
||
* // => ['ee', 'ff']
|
||
* waiting 2s
|
||
* // => ['gg', 'hh']
|
||
*/
|
||
|
||
const changeName = (name) => new Promise((resolve, reject) => {
|
||
setTimeout(() => resolve(name), 1000)
|
||
})
|
||
|
||
const sleep = time => new Promise((resolve, reject) => {
|
||
setTimeout(resolve, time)
|
||
})
|
||
|
||
const slicePostTask = async (names, chunkSize, time) => {
|
||
// todo
|
||
}
|
||
```
|
||
|
||
第七题:[数据排重](https://github.com/KieSun/fucking-frontend/issues/11)
|
||
|
||
<details>
|
||
|
||
```js
|
||
const dedup = (data, getKey = () => {} ) => {
|
||
// todo
|
||
}
|
||
let data = [
|
||
{ id: 1, v: 1 },
|
||
{ id: 2, v: 2 },
|
||
{ id: 1, v: 2 },
|
||
];
|
||
|
||
// 以 id 作为排重 key,执行函数得到结果
|
||
// data = [
|
||
// { id: 1, v: 1 },
|
||
// { id: 2, v: 2 },
|
||
// ];
|
||
|
||
let data1 = [
|
||
{ id: 1, v: 1, id1: 1 },
|
||
{ id: 2, v: 2, id1: 2 },
|
||
{ id: 1, v: 2, id1: 1 },
|
||
]
|
||
|
||
// 以 id 和 id1 作为排重 key,执行函数得到结果
|
||
// data1 = [
|
||
// { id: 1, v: 1, id1: 1 },
|
||
// { id: 2, v: 2, id1: 2 },
|
||
// ];
|
||
```
|
||
|
||
</details>
|
||
|
||
第六题:[实现一个 chunk 函数](https://github.com/KieSun/fucking-frontend/issues/8)
|
||
|
||
<details>
|
||
|
||
```js
|
||
/**
|
||
* @param input
|
||
* @param size
|
||
* @returns {Array}
|
||
*/
|
||
_.chunk(['a', 'b', 'c', 'd'], 2)
|
||
// => [['a', 'b'], ['c', 'd']]
|
||
|
||
_.chunk(['a', 'b', 'c', 'd'], 3)
|
||
// => [['a', 'b', 'c'], ['d']]
|
||
|
||
_.chunk(['a', 'b', 'c', 'd'], 5)
|
||
// => [['a', 'b', 'c', 'd']]
|
||
|
||
_.chunk(['a', 'b', 'c', 'd'], 0)
|
||
// => []
|
||
```
|
||
|
||
</details>
|
||
|
||
第五题:[Promise.all 错误处理](https://github.com/KieSun/fucking-frontend/issues/6)
|
||
|
||
<details>
|
||
|
||
异步请求通过 Promise.all 处理,怎么让其中失败的所有请求重试。
|
||
|
||
```js
|
||
Promise.all([A, B, C, D])
|
||
// 4 个请求完成后发现 AD 请求失败了,如果让 AD 请求重试
|
||
```
|
||
|
||
[答案](./Answer/1%20~%2010/5.md)
|
||
|
||
</details>
|
||
|
||
第四题:[消息队列](https://github.com/KieSun/fucking-frontend/issues/5)
|
||
|
||
<details>
|
||
|
||
页面上有三个按钮,分别为 A、B、C,点击各个按钮都会发送异步请求且互不影响,每次请求回来的数据都为按钮的名字。
|
||
|
||
请实现当用户依次点击 A、B、C、A、C、B 的时候,最终获取的数据为 ABCACB。
|
||
|
||
[答案](./Answer/1%20~%2010/4.md)
|
||
|
||
</details>
|
||
|
||
第三题:[请按照用例实现代码](https://github.com/KieSun/fucking-frontend/issues/3)
|
||
|
||
<details>
|
||
|
||
```js
|
||
// 请使用原生代码实现一个Events模块,可以实现自定义事件的订阅、触发、移除功能
|
||
const fn1 = (... args)=>console.log('I want sleep1', ... args)
|
||
const fn2 = (... args)=>console.log('I want sleep2', ... args)
|
||
const event = new Events();
|
||
event.on('sleep', fn1, 1, 2, 3);
|
||
event.on('sleep', fn2, 1, 2, 3);
|
||
event.fire('sleep', 4, 5, 6);
|
||
// I want sleep1 1 2 3 4 5 6
|
||
// I want sleep2 1 2 3 4 5 6
|
||
event.off('sleep', fn1);
|
||
event.once('sleep', () => console.log('I want sleep'));
|
||
event.fire('sleep');
|
||
// I want sleep2 1 2 3
|
||
// I want sleep
|
||
event.fire('sleep');
|
||
// I want sleep2 1 2 3
|
||
```
|
||
|
||
[答案](./Answer/1%20~%2010/3.md)
|
||
|
||
</details>
|
||
|
||
第二题:[以下代码输出什么,为什么?](https://github.com/KieSun/fucking-frontend/issues/2),这道题目是第一题的进阶版本,更有趣了。
|
||
|
||
<details>
|
||
|
||
```js
|
||
try {
|
||
let a = 0
|
||
;(async function() {
|
||
a += 1
|
||
console.log('inner', a)
|
||
throw new Error('123')
|
||
// a()
|
||
})()
|
||
console.log('outer', a)
|
||
} catch(e) {
|
||
console.warn('Error', e)
|
||
}
|
||
```
|
||
[答案](./Answer/1%20~%2010/2.md)
|
||
|
||
</details>
|
||
|
||
第一题:[以下代码输出什么,为什么?](https://github.com/KieSun/fucking-frontend/issues/1)
|
||
|
||
<details>
|
||
|
||
```js
|
||
try {
|
||
(async function() { a().b().c() })()
|
||
} catch (e) {
|
||
console.log(`执行出错:${e.message}`)
|
||
}
|
||
```
|
||
|
||
[答案](./Answer/1%20~%2010/1.md)
|
||
|
||
</details>
|
||
|
||
## 前端十五万字面试资料
|
||
|
||
[在线阅读](https://yuchengkai.cn/home/)
|
||
|
||
## 各类大厂内推
|
||
|
||
数十家公司及岗位,数百个岗位 HC,具体内容查看 [表格](https://bitable.feishu.cn/appdL3vQNYWhT2hGnNRjlC9XoWD)。
|
||
|
||
另外欢迎有招人需求的朋友提供招聘信息,触达数万前端,内推奖拿到手软。发送招聘信息至邮箱:zx597813039@gmail.com。
|