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‎data/blog/Async、Awiteyuanli.mdx

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title: Async、Awite原理
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date: 2023-03-10T12:50:11Z
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date: 2023-12-23T12:50:11Z
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summary:
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tags: []
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tags: ["JavaScript"]
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我想在异步中调用一个异步，在在这个异步中调用一个异步

‎data/blog/BFChegaodutaxian.mdx

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title: BFC和高度塌陷
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date: 2022-03-10T12:50:54Z
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date: 2023-12-23T12:50:54Z
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summary:
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tags: ["JavaScript"]
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## 高度塌陷

‎data/blog/ES6dixin特xing.mdx

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title: ES6的新特性
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date: 2022-02-10T12:48:31Z
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date: 2023-12-23T12:48:31Z
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summary:
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tags: []
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tags: ["JavaScript"]
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## 数组的解构

‎data/blog/ES6dixin特xing（er）.mdx

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title: ES6的新特性（二）
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date: 2022-02-11T12:49:13Z
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date: 2023-12-23T12:49:13Z
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summary:
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tags: ["JavaScript"]
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## Symbol

‎data/blog/ES6dixin特xing（san）.mdx

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title: ES6的新特性（三）
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date: 2022-02-20T12:49:31Z
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date: 2023-12-23T12:49:31Z
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tags: ["JavaScript"]
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## Array.prototype.includes

‎data/blog/JSerjinzhishujudichuli：qianxiBlob、ArrayBuffer、File、Buffer.mdx

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tags: ["JavaScript"]
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### 前言
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## 前言
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最近一直在对接媒体相关的需求，流媒体播放、语音输入之类的，踩了很多坑，总结下来是自己对于二进制数据的处理并不是很熟悉，今天抽空整理了一下相关二进制处理对象的使用和他们互相之间的转化。
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### Blob
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## Blob
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[blob](https://developer.mozilla.org/zh-CN/docs/Web/API/Blob/Blob)全称是 _Binary Large Object_ 表示一个不可变，原始类型的类文件对象，它可以是图片、音频、视频等，它的数据可以按照文本或二进制的格式进行读取。
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blob()包含两个参数
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当然也可以是其他的[MIME类型](https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types)：
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### Flie
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## Flie
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`File`继承了`Blob`的所有属性，可以看成一个特殊的`Blob`，且可以用在任意的 Blob 类型的 context 中。比如说， [FileReader](https://developer.mozilla.org/zh-CN/docs/Web/API/FileReader), [URL.createObjectURL()](https://developer.mozilla.org/zh-CN/docs/Web/API/URL/createObjectURL_static), [createImageBitmap()](https://developer.mozilla.org/en-US/docs/Web/API/createImageBitmap), 及 [XMLHttpRequest.send()](https://developer.mozilla.org/zh-CN/docs/Web/API/XMLHttpRequest#send()) 都能处理 Blob 和 File。
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从常见的来看，我们通过`input`标签上传一个文件，得到的就是一个`File`
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### ArrayBuffer
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## ArrayBuffer
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`ArrayBuffer` 对象用来表示通用的、固定长度的原始二进制数据缓冲区。
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它是一个字节数组，通常在其他语言中称为“byte array”。你不能直接操作 ArrayBuffer 中的内容；而是要通过[类型化数组对象](https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/TypedArray)或 [DataView](https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/DataView) 对象来操作，它们会将缓冲区中的数据表示为特定的格式，并通过这些格式来读写缓冲区的内容。
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[ArrayBuffer()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/ArrayBuffer) 构造函数创建一个以字节为单位的给定长度的新 ArrayBuffer。你也可以从现有的数据（例如，从 [Base64](https://developer.mozilla.org/zh-CN/docs/Glossary/Base64) 字符串或者[从本地文件](https://developer.mozilla.org/zh-CN/docs/Web/API/FileReader/readAsArrayBuffer)）获取数组缓冲区。
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#### 使用DataView操作
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### 使用DataView操作
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```
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// 新建一个buffer
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const buffer = new ArrayBuffer(16)
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![image](https://github.com/coderInwind/inwindBlog/assets/91716457/62838808-ed53-4f3d-97fd-154e8d89f210)
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这就是基本的使用，我们可以设置8-bit、16-bit、32-bit、64-bit的写入和读取，设置写入的偏移量，需要注意的是64-bit数据的类型得是大数（bigint）。
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#### 使用TypedArray操作
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### 使用TypedArray操作
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它会有数个类提供给我们操作数据：
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```
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const buffer = new ArrayBuffer(16)

‎data/blog/Vueyuanmayuedu——Vueneibudichushihualiucheng.mdx

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title: Vue源码阅读——Vue内部的初始化流程
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date: 2022-11-25T12:18:35Z
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date: 2023-12-23T12:18:35Z
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summary:
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tags: ["Vue"]
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## new 一个 Vue 实例

‎data/blog/Vueyuanmayuedu——xiangmujiegoufenxi.mdx

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title: Vue源码阅读——项目结构分析
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date: 2022-11-23T12:05:22Z
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date: 2023-12-23T12:05:22Z
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summary:
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tags: ["Vue"]
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‎data/blog/Vueyuanma——chushihuainitLifecycle.mdx

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title: Vue源码——初始化initLifecycle
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date: 2022-12-27T12:25:31Z
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date: 2023-12-23T12:25:31Z
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summary:
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tags: ["Vue"]
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## 前言

‎data/blog/Vueyuanma——gongjuhanshucached.mdx

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title: Vue源码——工具函数cached
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date: 2022-12-26T12:24:22Z
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date: 2023-12-23T12:24:22Z
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summary:
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## 前言

‎data/blog/Vueyuanma——mobanbianyi（ba）.mdx

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title: Vue源码——模版编译（八）
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date: 2022-12-24T12:39:51Z
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date: 2023-12-23T12:39:51Z
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tags: ["Vue"]
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## 前言

‎data/blog/Vueyuanma——mobanbianyi（er）.mdx

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title: Vue源码——模版编译（二）
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date: 2022-12-1T13:32:13Z
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date: 2023-12-23T13:32:13Z
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## 前言

‎data/blog/Vueyuanma——mobanbianyi（liu）.mdx

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title: Vue源码——模版编译（六）
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date: 2022-12-20T12:38:42Z
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date: 2023-12-23T12:38:42Z
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## 前言

‎data/blog/Vueyuanma——mobanbianyi（qi）.mdx

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title: Vue源码——模版编译（七）
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date: 2022-12-21T12:39:10Z
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date: 2023-12-23T12:39:10Z
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## 前言

‎data/blog/Vueyuanma——mobanbianyi（san）.mdx

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title: Vue源码——模版编译（三）
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date: 2022-12-05T12:32:15Z
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date: 2023-12-23T12:32:15Z
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## 前言

‎data/blog/Vueyuanma——mobanbianyi（si）.mdx

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title: Vue源码——模版编译（四）
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date: 2022-12-06T12:32:45Z
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date: 2023-12-23T12:32:45Z
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## 前言

‎data/blog/Vueyuanma——mobanbianyi（wu）.mdx

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title: Vue源码——模版编译（五）
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date: 2023-12-23T12:33:10Z
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## 前言

‎data/blog/Vueyuanma——mobanbianyi（yi）.mdx

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title: Vue源码——模版编译（一）
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date: 2023-12-23T12:26:37Z
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## 前言

‎data/blog/Vueyuanma——ruhechuangjianyigeganjingdimap.mdx

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title: Vue源码——如何创建一个干净的map
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date: 2023-12-23T12:31:21Z
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## 前言

‎data/blog/diedaiqiheshengchengqi.mdx

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title: 迭代器和生成器
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date: 2023-12-23T12:49:47Z
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## 什么是迭代器

‎data/blog/hanshudikelihua.mdx

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title: 函数的柯里化
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## 柯里化？

‎data/blog/jiVue3zhongshiyongEchartsshidiaoyongqiresizefangfabaocuo.mdx

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title: 记Vue3中使用Echarts时调用其resize方法报错
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date: 2022-06-13T12:38:15Z
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date: 2023-12-23T12:38:15Z
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tags: ["Vue"]
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## 前言

‎data/blog/liulanqidixuanranyuanli.mdx

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title: 浏览器的渲染原理
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date: 2022-01-12T12:42:45Z
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date: 2023-12-23T12:42:45Z
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‎data/blog/mianxiangduixiang.mdx

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title: 面相对象
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date: 2023-12-23T12:44:44Z
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## 面向对象的三大特性

‎data/blog/shiyaoshibibao？.mdx

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title: 什么是闭包？
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date: 2023-12-23T12:43:44Z
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## 闭包的定义

‎data/blog/shousipromise.mdx

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title: 手撕promise
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date: 2023-12-23T12:44:27Z
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## promise？

‎data/blog/shousipromise（er）.mdx

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title: 手撕promise（二）
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date: 2023-12-23T12:47:57Z
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## 手撕promise

‎data/blog/thiszhixiangna？.mdx

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title: this指向哪？
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date: 2021-12-23T12:44:07Z
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date: 2023-12-23T12:44:07Z
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## 显示绑定

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