From ff881a0e213bc330ccbc03f69250514e4b02076e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=90=91=E5=89=8DHell?= <542168513@qq.com>
Date: Mon, 2 Sep 2024 15:23:36 +0800
Subject: [PATCH] =?UTF-8?q?[feat]=20=E6=9B=B4=E6=96=B0=20record?=
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---
 docs/blog/_meta.json      |  5 ++++
 docs/blog/list/magicai.md | 56 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 61 insertions(+)
 create mode 100644 docs/blog/list/magicai.md

diff --git a/docs/blog/_meta.json b/docs/blog/_meta.json
index 03fab041..fd4f727e 100644
--- a/docs/blog/_meta.json
+++ b/docs/blog/_meta.json
@@ -4,6 +4,11 @@
     "name": "index",
     "label": "原创笔记"
   },
+  {
+    "type": "dir",
+    "name": "list",
+    "label": "一点记录"
+  },
   {
     "type": "file",
     "name": "taro_3",
diff --git a/docs/blog/list/magicai.md b/docs/blog/list/magicai.md
new file mode 100644
index 00000000..ec7066cb
--- /dev/null
+++ b/docs/blog/list/magicai.md
@@ -0,0 +1,56 @@
+
+# 0902面试总结
+
+## 手写题
+
+1. usePrevious
+
+```typescript
+import { useEffect, useRef } from 'react';
+
+export default function usePrevious<T>(state: T): T | undefined {
+  const ref = useRef<T>();
+
+  useEffect(() => {
+    ref.current = state;
+  }, [state]);
+
+  return ref.current;
+}
+```
+
+2. LazyMan 类实现
+
+```javascript
+
+class LazyMan {
+  constructor(name) {
+    this.name = name;
+    console.log(name);
+
+    this.base = Promise.resolve()
+  }
+
+  sleep (time) {
+    this.base = this.base.then(() => {
+      return new Promise((resolve) => {
+        console.log(`等待${time}秒`)
+        setTimeout(() => {
+          resolve()
+        }, time * 1000);
+      })
+    })
+    return this;
+  }
+
+  eat (food) {
+    this.base = this.base.then(() => {
+      console.log(`正在吃${food}`)
+    })
+    return this;
+  }
+}
+
+new LazyMan('张三').eat('banana').sleep(3).eat('launch').sleep(4).eat('food');
+
+```
\ No newline at end of file