原文:
https://developers.google.com/web/updates/2016/12/position-sticky
作者：Paul Kinlan (Paul is a Developer Advocate)

Four years ago Eric Bidelman created a rather awesome blog post about the fact that position: sticky landed in WebKit, which at the time was the engine that powered Chrome (as well as many other browsers including Safari). One year later, and much to the consternation of web developers we removed position:sticky from Chrome because “the current implementation isn’t designed in a way that integrates well with the existing scrolling and compositing system”.

原文: https://developers.google.com/web/updates/2017/02/media-session
作者：François Beaufort (Taylor is a PM on the Chrome Team, focusing on Web Components and Polymer.)

With the brand new Media Session API, you can now customize media notifications by providing metadata for the media your web app is playing. It also allows you to handle media related events such as seeking or track changing which may come from notifications or media keys. Excited? Try out the official Media Session sample.

Chrome 57将对Media Session API提供支持。Chrome 57的beta版本将于2017年2月发布，而稳定版本将于2017年3月发布。

原文: https://developers.google.com/web/updates/2017/01/webcomponents-org
作者：Taylor Savage (Taylor is a PM on the Chrome Team, focusing on Web Components and Polymer.)

Web Components

你是否曾经想要构建一个可以跨多个项目使用的，跟框架无关的、可供其他开发者使用的js组件？Web Components可能适合你。

原文:
https://developers.google.com/web/updates/2017/01/nic56
作者：Pete LePage (Pete is a Developer Advocate)

视频：https://youtu.be/F4DfGVbvRpY

• 支持Web Bluetooth API，Web应用可以和附近的低耗能的蓝牙设备进行通信
• ‘position: sticky’来了 - 他可以使所创建的元素正常滚动，直到黏到视口(viewport)的顶部。（译者注：代替之前监听scroll或者touchmove事件）
• 对所有用户默认使用HTML5

原文:
https://www.sitepoint.com/eight-html5-tags-you-might-not-know/?utm_source=frontendfocus&utm_medium=email

1.1 ‘mark’ Tag

标记和当前用户的相关性，与strong区分，用黄色底标记出来

原文:
https://www.sitepoint.com/eight-html5-tags-you-might-not-know/?utm_source=frontendfocus&utm_medium=email

1.1 ‘mark’ Tag

标记和当前用户的相关性，与strong区分，用黄色底标记出来

4. DOM

base

href

target

一、《视频直播技术详解》系列之一：开篇

参考:
《视频直播技术详解》系列之一：开篇

1. 主要流程

原作者给的流程图：

1. 什么是tree-shaking?

tree-shaking 由rollup.js提出的feature，使得js（ES2015）在打包的过程中，只需要引入需要用到的js部分，而不需要将整个js模块文件都打包。

基本操作

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control + a: 到行首
control + e: 行末
control + f/b: 前进后退，相当于左右方向键，但是显然比移开手按方向键更快
control + p: 上一条命令，相当于方向键上
control + r: 搜索命令历史，这个大家都应该很熟悉了
control + d: 删除当前字符
control + h: 删除之前的字符
control + w: 删除光标前的单词
control + k: 删除到文本末尾
control + t: 交换光标处文本
control + u: 删除一行
 + —/+/0: 调整字体大小
⌘ + r:清屏，其实是滚到新的一屏，并没有清空。ctrl + l 也可以做到