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<h2 id="BFC-块格式化上下文"><a href="#BFC-块格式化上下文" class="headerlink" title="BFC 块格式化上下文"></a>BFC 块格式化上下文</h2><h3 id="BFC是什么？"><a href="#BFC是什么？" class="headerlink" title="BFC是什么？"></a>BFC是什么？</h3><p><dfn>BFC</dfn> (Block Formatting Context)是块格式化上下文，是 Web 页面的可视化CSS渲染的一部分，是块级盒子的布局过程发生的区域，也是浮动元素与其它元素交互的区域。块级盒子是什么可以了解一下<a href="./视觉格式化模型.md">视觉格式化模型</a>。具有BFC特性的元素会被生成块盒子，块级盒子里面应用了BFC提供了一个独立的容器环境，块级盒子里面的元素在独立的环境里面进行一定规则的布局，容器里面的元素不会在布局上面影响到外面的元素，并且 BFC 具有普通容器所有的一些特性。</p>
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<h2 id="视觉格式化模型"><a href="#视觉格式化模型" class="headerlink" title="视觉格式化模型"></a>视觉格式化模型</h2><p>CSS 视觉格式化模型(visual formatting model) 是用来处理和在视觉媒体上显示文档时使用的计算规则。该模型是 CSS 的基础概念之一。</p>
<h3 id="什么是视觉格式化模型"><a href="#什么是视觉格式化模型" class="headerlink" title="什么是视觉格式化模型"></a>什么是视觉格式化模型</h3><blockquote>
<p>视觉格式化模型会根据<strong>CSS盒子模型</strong>将文档中的元素转换为一个个盒子。——MDN</p>
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<h2 id="访问-JavaScript-链式属性"><a href="#访问-JavaScript-链式属性" class="headerlink" title="访问 JavaScript 链式属性"></a>访问 JavaScript 链式属性</h2><p>在开发的过程中，会经常访问深层 JavaScript 属性，这时如果其中一个属性会有断层， 控制台就会报错出现如下错误。如果一个程序没有兼容深层访问属性的错误，就会在后端一个未知错误的时候会报错，并且难已检测。</p>
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<h2 id="2018关键转折点"><a href="#2018关键转折点" class="headerlink" title="2018关键转折点"></a>2018关键转折点</h2><p>2018的时间过得比我想像中的还要快，离2018年结束还剩4天了，每年到这个时候都是啪啪啪打脸的时候，年前立的Flag，都在这个时候打得特别的痛，不过这个时候对18年的总结也是一个很好自省的方式，在18年完成了两个我比较重大的转变，一个是生活方式的转变，生活方式的转变是一个好的开始，但也意味着我需要花时间去习惯两个人的生活，生活是需要花心机花时间去打理的，如何快速打理生活这也是一种学问吧，另一个转变是工作环境的转变，来了一间互联网公司，公司需然不大，但也有技术成长的空间可以让我发挥。</p>
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