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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="renderer" content="webkit">
<meta http-equiv="X-UA-Compatible" content="IE=edge" >
<link rel="dns-prefetch" href="https://ouyangxinghua.github.io">
<title>欧阳兴华的个人博客</title>
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<meta property="article:author" content="Russell">
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<h1 class="header-author"><a href="/">Russell</a></h1>
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<p class="header-subtitle" style="color:rgba(0,0,0,0.5)">心之所向 素履以往</p>
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<a q-on="click: openSlider(e, 'innerArchive')" href="javascript:void(0)">我的文章</a>
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<h1 class="header-author js-header-author">Russell</h1>
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<p class="header-subtitle"><i class="icon icon-quo-left"></i>心之所向 素履以往<i class="icon icon-quo-right"></i></p>
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<article id="post-WebAssembly-总结与展望" class="article article-type-post article-index" itemscope itemprop="blogPost"
style="background: rgba(255,255,255,0.8);">
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2019/12/17/WebAssembly-%E6%80%BB%E7%BB%93%E4%B8%8E%E5%B1%95%E6%9C%9B/">WebAssembly 总结与展望</a>
</h1>
<a href="/2019/12/17/WebAssembly-%E6%80%BB%E7%BB%93%E4%B8%8E%E5%B1%95%E6%9C%9B/" class="archive-article-date">
<time datetime="2019-12-17T03:17:03.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2019-12-17</time>
</a>
</header>
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<h2 id="引言"><a href="#引言" class="headerlink" title="引言"></a>引言</h2><blockquote>
<p>就在前几天,WebAssembly 正式成为 World Wide Web Consortium (W3C) 的标准，加入到了 HTML、CSS a和 JavaScript 的行列。WebAssembly 也正式抵达了 1.0 版本，它已获得了主流浏览器 Firefox、Chrome、Safari 和 Edge 的支持。既然都已经成为了标准，很明显对于web开发来说肯定有颠覆性的作用，那它到底有什么用呢，下面让我们一起来探索一下他的”黑科技”。</p>
</blockquote>
<p>为了了解WebAssembly，我们先来了解一下他的前世今生。</p>
<a class="article-more-a" href="/2019/12/17/WebAssembly-%E6%80%BB%E7%BB%93%E4%B8%8E%E5%B1%95%E6%9C%9B/#more">more >></a>
</div>
<div class="article-info article-info-index">
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<i class="icon-price-tags icon"></i>
<ul class="article-tag-list">
<li class="article-tag-list-item">
<a href="javascript:void(0)" class="js-tag article-tag-list-link color4">大前端</a>
</li>
</ul>
</div>
<div class="article-category tagcloud">
<i class="icon-book icon"></i>
<ul class="article-tag-list">
<li class="article-tag-list-item">
<a href="/categories/新技术//" class="article-tag-list-link color4">新技术</a>
</li>
</ul>
</div>
<p class="article-more-link">
<a class="article-more-a" href="/2019/12/17/WebAssembly-%E6%80%BB%E7%BB%93%E4%B8%8E%E5%B1%95%E6%9C%9B/">展开全文 >></a>
</p>
<div class="clearfix"></div>
</div>
</div>
</article>
<aside class="wrap-side-operation">
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<i class="icon-font icon-back"></i>
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<i class="icon-font icon-plane jump-plane"></i>
</div>
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</aside>
<article id="post-微信jsSdk本地调试" class="article article-type-post article-index" itemscope itemprop="blogPost"
style="background: rgba(255,255,255,0.8);">
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2019/12/13/%E5%BE%AE%E4%BF%A1jsSdk%E6%9C%AC%E5%9C%B0%E8%B0%83%E8%AF%95/">微信jsSdk本地调试</a>
</h1>
<a href="/2019/12/13/%E5%BE%AE%E4%BF%A1jsSdk%E6%9C%AC%E5%9C%B0%E8%B0%83%E8%AF%95/" class="archive-article-date">
<time datetime="2019-12-13T06:05:35.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2019-12-13</time>
</a>
</header>
<div class="article-entry" itemprop="articleBody">
<p>本地调试js-sdk，因为初始化js-sdk的时还需要通过域名url才能生成签名，所以需要在本地模拟一个<br>域名进行调试。下面是详细的操作步骤：</p>
<ol>
<li>首先需要让手机与调试的电脑位于同一个局域网</li>
<li>让电脑能够通过自己设置的域名访问调试本地页面，例如我的页面index是 <a href="http://127.0.0.1/basic.html" target="_blank" rel="noopener">http://127.0.0.1/basic.html</a> 我想要通过电脑浏览器访问 <a href="http://baidu.com/basic.html" target="_blank" rel="noopener">http://baidu.com/basic.html</a> 得到我的页面index<br>(1)修改hosts ，windows路径（C:\Windows\System32\drivers\etc），先用#把 127.0.0.1 localhost 注释掉，新建 127.0.0.1 baidu.com<br>(2)访问<a href="http://baidu.com/basic.html：" target="_blank" rel="noopener">http://baidu.com/basic.html：</a></li>
<li>下载安装charles，将手机的ip访问代理到电脑端：</li>
</ol>
<a class="article-more-a" href="/2019/12/13/%E5%BE%AE%E4%BF%A1jsSdk%E6%9C%AC%E5%9C%B0%E8%B0%83%E8%AF%95/#more">more >></a>
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<a href="javascript:void(0)" class="js-tag article-tag-list-link color3">js</a>
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<a href="javascript:void(0)" class="js-tag article-tag-list-link color5">node</a>
</li>
<li class="article-tag-list-item">
<a href="javascript:void(0)" class="js-tag article-tag-list-link color5">微信平台</a>
</li>
</ul>
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<i class="icon-book icon"></i>
<ul class="article-tag-list">
<li class="article-tag-list-item">
<a href="/categories/基于微信平台//" class="article-tag-list-link color2">基于微信平台</a>
</li>
</ul>
</div>
<p class="article-more-link">
<a class="article-more-a" href="/2019/12/13/%E5%BE%AE%E4%BF%A1jsSdk%E6%9C%AC%E5%9C%B0%E8%B0%83%E8%AF%95/">展开全文 >></a>
</p>
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</article>
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<article id="post-计算机网络学习总结" class="article article-type-post article-index" itemscope itemprop="blogPost"
style="background: rgba(255,255,255,0.8);">
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<h1 itemprop="name">
<a class="article-title" href="/2019/11/24/%E8%AE%A1%E7%AE%97%E6%9C%BA%E7%BD%91%E7%BB%9C%E5%AD%A6%E4%B9%A0%E6%80%BB%E7%BB%93/">计算机网络学习总结</a>
</h1>
<a href="/2019/11/24/%E8%AE%A1%E7%AE%97%E6%9C%BA%E7%BD%91%E7%BB%9C%E5%AD%A6%E4%B9%A0%E6%80%BB%E7%BB%93/" class="archive-article-date">
<time datetime="2019-11-24T01:48:50.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2019-11-24</time>
</a>
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<li>TCP的三次握手和四次挥手<br>(1) 建立起一个TCP连接需要经过”三次握手”：<br>第一次握手：客户端发送syn包(syn=j)到服务器，并进入SYN_SEND状态，等待服务器确认；<br>第二次握手：服务器收到syn包，必须确认客户的SYN（ack=j+1），同时自己也发送一个SYN包（syn=k），即SYN+ACK包，此时服务器进入SYN_RECV状态；<br>第三次握手：客户端收到服务器的SYN＋ACK包，向服务器发送确认包ACK(ack=k+1)，此包发送完毕，客户端和服务器进入ESTABLISHED状态，完成三次握手。<br>握手过程中传送的包里不包含数据，三次握手完毕后，客户端与服务器才正式开始传送数据。理想状态下，TCP连接一旦建立，在通信双方中的任何一方主动关闭连接之前，TCP 连接都将被一直保持下去</li>
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<p>(2) 由于TCP连接是全双工的，因此每个方向都必须单独进行关闭。这个原则是当一方完成它的数据发送任务后就能发送一个FIN来终止这个方向 的连接。收到一个 FIN只意味着这一方向上没有数据流动，一个TCP连接在收到一个FIN后仍能发送数据。首先进行关闭的一方将执行主动关闭，而另一方执行被动关闭。<br>（1）主动端A发送一个FIN，用来关闭客户A到被动端B的数据传送。<br>（2）被动端B收到这个FIN，它发回一个ACK，确认序号为收到的序号加1。和SYN一样，一个FIN将占用一个序号。<br>（3）被动端B关闭与主动端A的连接，发送一个FIN给主动端A。<br>（4）主动端A发回ACK报文确认，并将确认序号设置为收到序号加1。</p>
<p>(3) 序列号、确认号及标志位等<br>序列号seq：占4个字节，用来标记数据段的顺序，TCP把连接中发送的所有数据字节都编上一个序号，第一个字节的编号由本地随机产生，给字节编上序号后，就给每一个报文段指派一个序号，序列号seq就是这个报文段中的第一个字节的数据编号。<br>确认号ack：占4个字节，期待收到对方下一个报文段的第一个数据字节的序号，序列号表示报文段携带数据的第一个字节的编号，而确认号指的是期望接受到下一个字节的编号，因此挡墙报文段最后一个字节的编号+1即是确认号。<br>确认ACK：占1个比特位，仅当ACK=1，确认号字段才有效。ACK=0，确认号无效。<br>同步SYN：连接建立时用于同步序号。当SYN=1，ACK=0表示：这是一个连接请求报文段。若同意连接，则在响应报文段中使用SYN=1，ACK=1.因此，SYN=1表示这是一个连接请求，或连接接收报文，SYN这个标志位只有在TCP建立连接才会被置为1，握手完成后SYN标志位被置为0.<br>终止FIN：用来释放一个连接。</p>
<p>为什么握手是3次而挥手是4次呢？<br>至于四次挥手，同样也是基于以上的原理。尤其是通信双方都可以独立关闭自己的通信通道，也就是半关闭。<br>client先发送FIN告知对方我已经完成数据发送了，server回复ack来确定我知道了。这样一个流程，就关闭了client的发送信息通道。但是还可以接收来自server方的数据。<br>server此时已经知道接收不到client的数据了，但是还可以给它发送数据。如果server也没有啥数据要发送给对方了，server也会以FIN标志位发送一个信息给client，client接到后，也会传递一个ack表示知道了。这样子，双方都完成了关闭。</p>
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<h2 id="前言"><a href="#前言" class="headerlink" title="前言"></a>前言</h2><p><strong>随着笔者工作的深入，发现webpack对于一个合格的前端工程师来说是一项很重要的技能，如果对webpack了解还不够深入，工作中或者学习中可能会遇到一些麻烦，为此笔者特意建立此文章用来记录与webpack相关的知识，并且笔者会不断更新此文章(边学边更新)。</strong></p>
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<li>webpack中的plugins<br>插件（Plugins）是用来拓展webpack功能的，它们会在整个构建过程中生效，执行相关的任务。<br>Loaders和Plugins常常被弄混，但是他们其实是完全不同的东西：Loaders是在打包构建过程中用来处理源文件的（JSX，Scss，Less..），一次处理一个;插件并不直接操作单个文件，它直接对整个构建过程起作用。<br>webpack有很多内置插件，同时也有很多第三方插件，可以让我们完成更加丰富的功能。插件目的在于解决 loader 无法实现的其他事。</li></ol>
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<h2 id="前言"><a href="#前言" class="headerlink" title="前言"></a>前言</h2><p>笔者最近在深入学习ES6中, 在写代码的过程中用到了set,Map这两个ES6新增的数据结构, 深切感受到了它们的强大, 解决问题的能力。于是笔者决定写一篇文章总结一下。并分享给大家,希望能够对大家有帮助。这篇文章主要给大家介绍了关于ES6学习笔记之map、set与数组、对象对比的相关资料, 下面让我们一起走进set, Map的世界吧😄😄。</p>
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<p><strong>笔者工作中用到的js框架便是当下十分火热的vue，这篇文章用于记录和总结笔者工作和学习过程中遇到的关于vue框架的问题。以便以后遇到相同的问题能够快速找到解决办法。😄😄</strong></p>
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<li>Vue 自定义标签的 src 属性不能使用相对路径的问题<br>我们都知道，当使用自己定义的组件和原生img标签用相对路径引入src的话，其实是会有不同结果的，如下<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><!-- 正常加载 --></span><br><span class="line"><v-img :src="require('../../assets/logo.png')" /></span><br><span class="line"><!-- 无法加载 --></span><br><span class="line"><v-img src="../../assets/logo.png" /></span><br><span class="line"><!-- 正常加载 --></span><br><span class="line"><img src="../../assets/logo.png" /></span><br></pre></td></tr></table></figure>
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缺失模块。<br/>1、请确保node版本大于6.2<br/>2、在博客根目录（注意不是yilia根目录）执行以下命令：<br/> npm i hexo-generator-json-content --save<br/><br/>
3、在根目录_config.yml里添加配置：
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posts:
title: true
date: true
path: true
text: false
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slug: false
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excerpt: false
categories: false
tags: true
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<div class="aboutme-wrap" id="js-aboutme">Russell:<br>来自某不知名院校, <br>就职于某不知名互联网公司<br><br>职业前端<br>热爱篮球，信仰:<br>Russell Westbrook<br><br>此博客用来记录学习的点点滴滴<br><br>谢谢来前来看我博客的小伙伴😄😄</div>
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