koa2

Comparison and Analysis of Express and Koa2 in nodejs, and comparison and analysis of nodejskoa2 I can see a question: will Express be replaced by Koa2? . Just a little research on Express and koa, so I gave a simple answer. 1. Conclusion At present, there are no signs that Express will be replaced by koa2. At present, the Express ecosystem is more mature and

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Detailed description of the server rendering Transformation (koa2 + webpack3.11) and koa2webpack3.11 of the React Project Because of the need for Web SEO, we need to transform the previous React project into server rendering. After some investigation and research, we have consulted a lot of Internet information. Step into the trap. Selection idea: Implement server rendering. If you want to use the latest React version and do not make major changes to

With the increasing heat of node. js, the various frameworks are beginning to emerge, and node. JS is gradually being applied to the scenario that handles server-side requests. The framework for building Web projects also began to appear--express, KOA, KOA2, egg, and so on, of course, to understand its good or bad or to eat their own source. This article will not be involved in the source code, just lead beginners to understand the basic use of

In the Node. js environment, how does one add the travis ci continuous integration tool to Koa2? node. jskoa2 Preface Because we recently used koa2 for project testing and development, we wanted to integrate travis ci with less information on the Internet, so we made a whole record. Share it for your reference and study. Let's take a look at the detailed introduction below. The method is as follows: Let's t

in the Node environment or on the browser side. koa-nunjucks-2is based on Nunjucks the encapsulated third-party middleware, perfect support Koa2 .Nunjucks IntroductionFirst we need to understand Nunjucks a few featuresSimple syntaxVariable {{}} {{foo.bar}} {{ foo["bar"}}If the value of the variable is undefined or null , it will not be displayed.Filter filters {{|}} {{|join(","}} {{|replace("foo","bar"|}}ifJudge {%if%} true {%%} {%if%}

KOA2 for easy Webpack-dev-server Thermal update Original HTTPS://GITHUB.COM/ZHUANGZHOU/BLOG/ISSUES/3 Idle to Nothing, with koa2 a simple webpack-dev-server, in fact, many online Express build hot update, but koa2 few; Welcome to the big guy to shoot bricks and enlighten;Source Configure the basic Webpack1. Download the installation pa

KOA2: Solve asynchronous problems with es678 synchronous notation, solve callback hell problem with express, const KOA = require ("Koa")//NPM Install latest version of Koaconst app = new Koa () KOA2 creating the server is done by means of newConst Asyncio = () =>{return new Promise (resolve = SetTimeout (resolve,500))}const mid = () = Async (Ctx,next) =G T {ctx.body = "mark" await next () Ctx.body + = "Done

Building the front-end environment　Front-end development environment constructionThe development model, which uses a front -end separation , is the JSON interface provided by the front-end invocation backend, so that Vue and Koa2 's code has no coupling. So the development environment is completely separate, you can even deploy to two servers to run after the development is complete.　　1. Create a front-end foldermkdir Smilevue　　2. Build the project di

Use the koa2 framework instance in nodejs6 and nodejs6koa2 Koa2 uses ES7 syntax, such as async and await, so it needs to run after node7.6. But before node7.6, you can also run it using koa2 of babel. First, install babel and several babel modules in the project: npm install babel babel-register babel-preset-env --save Then introduce the 'babel-register 'module t

Detailed description of vue + vuex + koa2 Development Environment establishment and example development, vuexkoa2 Preface The main purpose of this article is to learn how to use the koa framework to build web services and provide some backend interfaces for frontend calls. The purpose of setting up this environment is that the front-end engineer can request data from the back-end engineer through the http path set up by the front-end engineer before a

Server code (dependent on KOA2, koa-websocket)/*instantiating external dependencies*/Let Koa= Require ("KOA2"); let WebSocket= Require ("Koa-websocket");/*instantiate the WebSocket, instantiate and store all the on-line text arrays and assign the listening ports*/Let app= WebSocket (NewKoa ()); let Ctxs=[];app.listen (80);/*implement a simple send message*/App.ws.use (CTX, next)={Ctxs.push (CTX); Ctx.websoc

Understanding the usage of async await in Koa2 and Koa2async Koa is a well-known Node Server framework, with versions 1.x and 2.x. The former uses generator for asynchronous operations, and the latter uses the latest async/await solution. When I started using this method, I encountered a problem. The Code is as follows: Const Koa = require ('koa'); const app = new koa (); const doSomething = time => {return new Promise (resolve => {setTimeout (() =>{

Talking about how the Koa2 framework uses CORS to complete cross-origin ajax requests. There are many ways to implement cross-origin ajax requests. One of them is to use CORS, and the key to this method is to configure it on the server side. This article only describes the basic configurations that can complete normal cross-origin ajax response (I will not perform in-depth configuration ). CORS divides requests into simple requests and non-simple requ

.com1.z0.glb.clouddn.com/simlevuedemopic001.jpg '}, {imageUrl: '/http 7xjyw1.com1.z0.glb.clouddn.com/simlevuedemopic002.jpg '}, {imageUrl: '/http (7xjyw1.com1.z0.glb.clouddn.com/simlevuedemopic003.jpg '}, ] } },Template files are as followsfor = "(Banner,index) in Bannerpicarray": key= "index" > CSS code:. swiper-area{ width:20rem; Clear:both; }This time you will find that CSS style is not the effect we want, this i

MongoDB used by the databaseMongoDB Download: https://www.mongodb.com/MongoDB gui:https://robomongo.org/Using middleware KOA to build frameworksUsing middleware monk to link databases//Import KOA, unlike KOA 1.x, in KOA2, we are importing a class, so we use uppercase KOA to indicate:Const KOA = require (' Koa '); Const Router= Require (' Koa-router '); Const Monk= Require (' Monk ');//Create a Koa object that represents the Web App itself:Const APP =N

('/user/register ',Async(CTX,Next=>{ Let {Name,Password} = CTX.Request.Body if(Name=== ' Ikcamp ' Password=== ' 123456 '){ CTX.Response.Body = ' Hello,${Name}! ` }Else{ CTX.Response.Body = ' account information error ' } })Several common requests, as well as corresponding parameter-passing parsing, have been studied. In the next section, we'll refactor the project, make a hierarchy, and introduce the view layer. Next: Code layering--grooming code, asymptotic MVC

in CSS to REM units for testing. Because the font size of the HTML root element is 16px, then it is better to change to REM units and divide it directly by 16.. test{ Width:20rem; Height:10rem; Background-color:bisque; Text-align:text;}.hello{ color:red; Font-The page doesn't change, which means we have a conversion relationship. To better illustrate this, we can try to add a font size to the HTML root style, for example font-size:32px; . At this point the page and font are en

not recommended to use this method to introduce.Elegant introduction of VantVant is a support for Babel-plugin-import introduced, it allows us to introduce component modules on demand, and does not manage our style, now the main introduction method of Vue Project component library.Installing Babel-plugin-importNPM I babel-plugin-import-dConfiguring plugins (Plug-in) in. BABELRC"Plugins": [ "Transform-vue-jsx", "Transform-runtime", ["import", {" LibraryName ":" Vant "," style ":true}]

Objective Now that I can find it and come and see this article,Then certainly know why the background to configure Browserhistory,And I'm sure you know why you have to go with a relatively more troublesome browserhistory,Instead of a simpler hashhistory that doesn't require a background configuration,And the difference between Browserhistory and hashhistory.Well, if you don't know, you can go and search,Lots and lots. There's not much to explain here,Nonsense not much to say, directly o