Does selenium web driver support Node.js and Vue.js ? or Do we need to use any plugins to support them?if yes,please name the plugins?
Selenium is a free (open source) automated testing suite for web applications across different browsers and platforms. Primarily it is used for automating web applications for testing purposes, but is certainly not limited to just that.
Having said that, when using Selenium WebDriver you need not worry about the Application stack or the technologies involved as Selenium interacts with the elements within the DOM Tree.
So to conclude, irrespective of the AUT's underlying technology stack being built through Node.js or Vue.js, the main focus is how the WebElements are represented within the HTML DOM.
Related
Hope I'm not being to general but: I have been tasked with the job of "rejuvenating/modernizing" a monolithic Java EE (JSF/CDI/EJB/JPA) app. Since the requirements state that it should support multiple clients, I have split up the code in a server (JAX-RS interfaces) and a client part (not yet done)
The server is pretty straightforward but I'm wondering about the UI part. Nowadays (hope I don't sound too oldskool) various Node JS spin-offs seem to be popular but I'm under the impression that they have the most value to offer in the "scalable server" section. Does the various Angular/React/Node framework have anything to offer for the client if you have something more complex than a single page app?
It appears to be a really hard time to pick a UI technology nowadays. Sure, the server/DB part which contains most of the business logic are pretty future-proof but still, one would like to focus on one UI technology. There are various jQuery-based frameworks like Kendo, Vaadin & co etc. One option would be to stick with JSF + ICEfaces/PrimeFaces and just work with the REST interface. And then there is JavaFX which looks nice but the future looks a bit uncertain.
So. If the backend is not going to be Node JS, does Node JS have anything to offer for the UI part that can't be done more easily with other frameworks and does anyone have other insights on the UI layer in general. Predicting is hard, especially the future ;-)
Node.js is a way to run javascript on the server side, not client side. That said, npm (nodes package manager) or its wrappers (like bower) are quite often used to manage the client side dependencies - which is very useful to have.
Angular and react (among others) are client side javascript ui frameworks to help make writing ui much nicer. Neither depend on the backend being written in node.js and can work with any rest api (or other server side apis) - or no api at all if that backend injects all the data the page needs into the page itself.
Electron, which combines NodeJS and Chromium (render Process).
https://electronjs.org/
Formerly known as atom shell it was created by Github, it is the core of the Atom Editor, VS Code, Slack app, and a ton of “thick client” applications. https://en.m.wikipedia.org/wiki/Fat_client
There are several implementations which allow you to use Node.JS modules on a client-side (ie. web browser). You can then use html/css and call Node.JS modules directly from your DOM which is used to implement UI.
I'm most familiar with NW.js which I've used couple of times. Others would be for example Electron or AppJS
Now Airbnb have a tool Hypernova for server side rendering of javascript views. I would like to know if it can be used for enhancing SEO of Ajax based website like the tool Prerender is used for. If not then why?
A quick way to figure out the way how a tool works is to check its dependencies. It doesn't contain phantom or other adapter for headless browser, so it just evaluates client-side scripts in Node.js.
hypernova runs client-side scripts in Node.js and renders them to HTML. In order to make this possible, scripts should be universal and don't depend on browser-specific features. This allows to avoid the overhead that is caused by rendering in headless browser (like Prerender does).
hypernova documentation is focused on using React components because they are naturally universal and most time don't require real DOM when being rendered in Node.js, They are rendered with hypernova-react package, which is a thin wrapper over React's own SSR features.
AngularJS was developed to run in a browser and relies on real DOM. It is guaranteed to work properly only on client side. It's possible (at least in theory) to render AngularJS application in Node.js with DOM emulation (jsdom) or jQuery emulation (cheerio), but hypernova doesn't offer a suitable adapter for that.
I'm assigned to develop web-based GIS, but I'm new with web programming. So, Where I can get an insight to start develop web-based GIS?
thank you before
regards!
You have to know about the 2 main components for web programming: front-end and back-end.
Front-end, is how the results/graphics are going to be displayed in the client (pad, monitor).
The most common tools are the javascript libraries like ArcGIS API for JavaScript, or OpenLayers.
For front-end you need to learn about html, css and javascript.
Back-end, is how you will manage the architecture (models-databases) of your project. There are many technologies to choose, for example, Java (J2EE) or .NET. For geodatabases there are systems like SQL server or PostGIS. Back-end is normally placed in the server.
In GIS you would also need a web mapping server (for sharing data, for instance), you can use GeoServer or ArcGIS for Server (commercial).
In my experience, I like to use django as back-end, this is a framework for web development using python (There are also many libraries for GIS using python which you can integrate). With django you can use a model-view-template controller to manage data to the web pages in a simple and fast way. Django has also a module called geodjango, to manage geodatabases, but not strong as GeoServer.
Start with "Requirements". To understand what requirements is, please start with a book on software engineering.
Once you have the requirements, you need to "Design" - what tools/technologies/languages to use. If you are just beginning programming, you typically get a senior to do the design
Then you get to a task, such as rendering google maps on a web page, that can be answered in something like stackoverflow.
I'm planning to build a hybrid mobile app,
I have already progressed pretty well with the server-side using Express 3, and PAssport for authentication.
Now I need to make a decision on what framework or library to use for the clinet-side.
I was wondering if I could get some recommendations and perhaps pros and cons of going with frameworks like
Sencha Touch, JQuery Mobile, Phonegap....
and if there is anyother ones that you think it's worth considering please mention them here,
Thanks for any pointers or advice
JQuery Mobile and Sencha Touch are JavaScript libraries that will let you create an HTML5 application that looks like a native application. Cordova/Phonegap lets you wrap your HTML5 app in native code and provides a common JavaScript API that gives you access to native functionality, like taking a picture with the camera or getting the users Contacts. Another benefit of using Cordova is that it creates native applications for you using the same HTML5 app, so you can publish these files to App stores and increase your distribution. With a JQuery/Sencha Touch only app, you can't distribute on app stores because your hybrid app is simply a website (so, I guess it'd only be a mobile app.)
There are hundreds of blog posts comparing different JavaScript frameworks like Sencha vs jQuery vs Dojo, so you should just go off and do some of that reading. Personally I would suggest Dojo as I think it is the most powerful and enterprise ready framework, but it can have a steep learning curve. One thing I like about Dojo though is the build system, you can pick and choose the modules you want so that you don't have to end up including an enormous .js file like JQuery. I have no idea if jQuery can do this, but a lot of user apps I have seen that use Cordova and JQuery end up including all of jQuery and then jQuery mobile.
If you want to access native device features and/or package the web app as a native app and distribute it on the stores, you should use one of those JavaScript frameworks in combinations with Cordova. (Cordova is the new name for PhoneGap.) Phonegap/Cordova is not really used to build mobile web apps, it's used to extend the capabilities of mobile web apps and allow them to access native device functionality in a completely cross platform way.
Ionic is a new framework available for making hybrid apps that I am liking a lot so far. The framework is built with Sass and AngularJS on top of PhoneGap. Ionic just handles the front end so you still build your app with PhoneGap. I found that since it uses AngularJS your javascript code ends up being a lot cleaner and you will save development time making your app slick compared to what you would have to write with jQuery. It also has some beautiful UI elements. The ionic team has done a lot of speed optimizations with the framework so your app will feel more native than your typical hybrid app built purely with PhoneGap. The framework is still in alpha but I have been impressed with it.
I'd like to start developing Google Chrome extension using node.js (since I've already written a "text-to-song" script in node.js, and I'd like to turn it into a Chrome extension.) What would be the most straightforward way of approaching this problem?
Actually it is. Look at this Developers Live-cast. This is something I've been looking for as well, and this would help you.
This brings your node applications bundled to your browser.
Here is the repo!
EDIT:
I've noticed that this old answer of mine keeps getting upvotes now and then (thank you all).
But nowadays I'm more an advocate of using web apps instead of bundling your application into many platforms like the chrome store or whatever.
You can check the google's post here and here indicating some directions.
In practice I advise for you to start building a progressive web app (PWA) with offline capabilities using service worker and progressive stuff.
There are plenty of resources around the web nowadays and you can offer a much richer application that may achieve a much broader audience if you do it the right way.
Thanks again, and good coding.
Simple answer is NO, unless you can find a way to install node.js with an extension using NPAPI.
Nodejs and a Google Chrome Extension do have a couple things in common i.e they both understand javascript and they both use the v8 javascript engine.
Google Chrome Extension
"Google Chrome Extensions are small software programs that can modify and enhance the functionality of the Chrome browser".
To develop a Google Chrome Extension you should write some javascript and or html/css.
Then you can run the extension in your browser.
If you wish for others to download your extension you will have to provide config.json file that describes you extension sets permissions etc.
Nodejs
"Node.js is a platform built on Google Chrome's JavaScript runtime for easily building fast, scalable network applications".
To develop applications in nodejs you write some javascript and or html/css for web applications.
If wish for others to use you application you start you nodejs server and listen for incoming requests.
Summary
Despite some of the similarities a Google Chrome Extension and Nodejs have nothing to with each other. You cannot use them together in some special way outside of the normal client/server communication.
You can use a WebPack (GitHub) or Browserify (see handbook) to build web-browser extension based on the node.js code.
With Browserify, to convert your code, you can simply run:
browserify node-code.js -o node-code-out.js
Read more:
Browserify vs Webpack.
Build a Chrome Extension with Preact and Webpack (see: Preact Chrome Extension Starter).