# 2019.08.09

1. 给指定的元素设置快捷键

   https://github.com/github/hotkey

2. 关于 String.prototype.replace 特殊替换模式

   const msg = 'This is a great message';
   
   msg.replace('great', 'wonderful'); 
   // "This is a wonderful message"
   //
   // -> 'great' is replaced by 'wonderful'
   
   msg.replace('great', '$&-$&');
   // "This is a great-great message"
   // '$&' represents the matched substring
   //
   // -> 'great' is replaced by 'great-great'
   
   msg.replace('great', '$`');
   // "This is a This is a  message"
   // '$`' represents the string before the matched string
   //
   // -> 'great' is replaced by 'This is a '
   
   msg.replace('great', `$'`)
   // "This is a  message message"
   // `$'` represents the string after the matched string
   //
   // -> 'great' is replaced by ' message'
   

   https://www.stefanjudis.com/today-i-learned/string-prototype-replace-supports-replacement-patterns/

   https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace#Specifying_a_string_as_a_parameter

3. Kyle Simpson已经开始着手他的畅销的“你不知道的JavaScript”系列丛书的第2版。

   https://twitter.com/i/web/status/1157010588658282496

   https://github.com/getify/You-Dont-Know-JS

4. RxJS是一个使用Observables的反应式编程框架，使编写异步代码变得非常容易。根据官方文档，这个项目是JavaScript的一种反应式扩展，具有更好的性能，更好的模块化，更好的可调试调用堆栈，同时保持大部分向后兼容，有一些突破性的变化，减少了API表面。它是Angular用来处理反应性的官方库，将回调的pull操作转换为Observables。

   https://blog.logrocket.com/understanding-rxjs-observables/

   

5. 页面可视化搭建工具技术要点

   http://www.alloyteam.com/2019/07/h5-build-tool-pipeline/

   https://github.com/page-pipepline

6. 2019年大前端技术趋势分析

   https://mp.weixin.qq.com/s?__biz=MzUxMzcxMzE5Ng==&mid=2247492026&idx=1&sn=6446243531dec91e86340b07f3cd789f

7. Grid studio是一个基于Web的电子表格应用程序，完全集成了Python编程语言。

   https://github.com/ricklamers/gridstudio

   https://mp.weixin.qq.com/s/fLwbYu18mCGmG_zvIgqU2g

8. ES2019中的新功能，JSON.parse() 行分隔符（\ u2028）和段落分隔符（\ u2029）符号正确解析，而不是导致SyntaxError。

   https://blog.tildeloop.com/posts/javascript-what%E2%80%99s-new-in-es2019

9. 如何优雅地取数值的整数和小数部分

   https://github.com/akira-cn/FE_You_dont_know/issues/5