Detailed examples of introductory development of Babel plug-ins

Introduction to Babel Babel is a Javascript compiler, a code-to-code compiler, commonly known as a "conversion compiler". Babel's working process Babel has three main processes: parse, transform and generate. Code parsingAST is constructed by lexical analysis and grammatical analysis. Code ConversionProcessing AST, processing tools, ...

Posted on Tue, 06 Aug 2019 20:19:11 -0700 by hi2you

Python3 Web Crawler Actual-38, Dynamic Rendering Page Grabbing: Use of Splash

Splash is a JavaScript rendering service, a lightweight browser with an HTTP API, and it connects to the Twisted and QT libraries in Python, with which we can also capture dynamically rendered pages. 1. Functional introduction With Splash we can do the following: Asynchronous rendering of multiple web pages Get the source code or screenshot o ...

Posted on Tue, 06 Aug 2019 16:18:47 -0700 by dancahill

Component communication mode of vue

Links to the original text: https://juejin.im/post/5d267dcdf265da1b957081a3 COMPONENT COMMUNICATION MODE I. props / $emit 1. The parent component passes values to the child component 2. Subcomponents pass values to parent components 2. ...

Posted on Tue, 06 Aug 2019 01:54:06 -0700 by master82

Vue-Cli3+Antd-based mid-background management model-01-using Vue CLI3 to quickly create projects

First, Preface From the end of last year to the beginning of this year, a background management framework was built using Vue2.x+elementUI. The purpose is to build the front-end engineering, customize the Vue-cli2.x source code and add some functions. By learning the source code of cli and scaffolding ...

Posted on Tue, 06 Aug 2019 00:55:19 -0700 by __greg

Strts2 Result View and Action Type

Result View 1. Result View Concept The return value of action method is String type. It returns the name of the corresponding result view. In action class, return keyword is used to express it. In corresponding struts.xml file, tag is used to express it.2. Result View Properties <result name="succe ...

Posted on Sun, 04 Aug 2019 00:15:57 -0700 by first_lady_the_queen

Using Python's Bare Hand to Build a Framework for Stock Retrospective Testing

The framework of stock retest is built by pure Python. What is a test-back framework? Whether it is traditional stock trading or quantitative trading, it is unavoidable that we need to test whether our trading strategy is feasible. The simplest way is to use historical data to test trading strategy, and the test-back framework is to provide su ...

Posted on Sat, 03 Aug 2019 08:32:23 -0700 by genom

Service Fault Tolerant Component of Spring Cloud Alibaba - Sentinel [Rule Persistence]

Rule persistence-pull mode After the entinel console configures the flow control and downgrade rules for the interface resources of a micro-service, if the micro-service is restarted, the related rules of the configuration will be lost, because Sentinel stores the rules in memory by default. It is obviously unreasonable to reconfigure rules ev ...

Posted on Sat, 03 Aug 2019 08:22:07 -0700 by Diggler

Introduction to egg.js

Links to the original text: https://www.cnblogs.com/rope/p/10859014.html What is Egg? Egg.js is an enterprise-level framework and application. It is hoped that Egg.js will breed more upper-level frameworks to help development teams and dev ...

Posted on Sat, 03 Aug 2019 03:58:01 -0700 by Residue

Python polling, long polling, websocket

Links to the original text: https://www.jianshu.com/u/8f2987e2f9fb polling ajax polling, ajax polling principle is very simple, let the browser every few seconds to send a request, ask the server whether there is new information. 1. Backen ...

Posted on Sat, 03 Aug 2019 01:01:29 -0700 by zilem

[DailyENJS Phase 1] Three Methods of Cloning Objects in JavaScript

DailyENJS is dedicated to translating excellent front-end English technical articles, bringing better technical perspectives to technical classmates. Because objects in JavaScript are reference values, you cannot simply use = for copying.But don't worry, there are three ways to clone an object_ const food = { beef: '🥩', bacon: '🥓' } // "Spread ...

Posted on Fri, 02 Aug 2019 21:08:48 -0700 by bookbuyer2000