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I am working on a project where we are running our web server on an embedded system so I have memory constraints but is there a way for me to build a Single Page Application on this web server ? If, yes then do we have a javascript framework that I can work with or am I stuck with basic javascript itself ?
And there will be real time data sent and received from the server.
Single-page applications can have very little logic on the server-side, since the entire application is JavaScript that is run on the client. The only server-side logic you will absolutely need will be a small server that sends the files to the client (which would the the web browser in which you're accessing the site).
As mentioned before by Gerton, you can comfortably build a SPA with Angular. You can also look at the other two of the most used frameworks currently: react.js and vue.js.
Have fun!
I work on multiple embedded systems and would recommend re-architecting your solution. The whole web server to UI concept for embedded systems is the old way of doing things and it's not the fastest or the most efficient for generating real time data. You should be looking into QT for Linux-based systems or Xamarin for Windows based systems.
If you already have the back-end data model finished, it's easy to create a new project in one of these applications and build a UI over the top. Trust me on this one. It'll save you a ton of hassle and will increase the performance of your embedded system.
If you implement a web server, I would recommend doing it to expose data to a cloud application or as part of a distributed architecture, not part of feeding data to your local UI.
Angular Seems to support your question quite nicely, it's a single page application framework
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I have seen many people are using Nodejs with reactjs but I liked python and react so much that I wanted to know if I could python with react. If so could you please give me some links for learning that please
I have experience building web applications using React and Python Flask together, so perhaps I can help.
I do not know of a way to directly use Python on client-side web applications, but there are certainly plenty of ways to use Python on the backend. The most popular Python web frameworks are Flask and Django.
If so could you please give me some links for learning that please
YouTuber Corey Schafer has a great YouTube tutorial series on Flask, which I would wholeheartedly recommend.
Once you get more comfortable with web development in Python, I think the website https://realpython.com/ has great tutorials for both specific questions (e.g. Token-Based Authentication in Flask) and more general tutorials.
If you go with Django, it has a great ORM built in for working with databases.
If you go with Flask, which is definitely more beginner friendly IMO, I would recommend Peewee ORM for working with relational databases unless you have more complicated use-cases, in which case SQLAlchemy is the de-facto standard.
Good luck learning!
Update
I just came across this cool Python library called Transcrypt that transpiles Python code into JavaScript, so it turns out you can write client-side code for the web in Python. Their website has some cool tutorials.
Yes. React is mostly agnostic of what's going on at the server-level.
ie it does not care what backend you use.
Check this example : https://realpython.com/the-ultimate-flask-front-end/
https://plotly.com/dash
I have been using this to build up react app with python.
They have new libs 'dash' and dash component whose underlying is react.js.
React is backend-agnostic.
React manages the UI, which possibly interacts with some HTTP APIs regardless in what language they're made of.
What's important is that your API use some standard like REST, jsonapi or GraphQL so you can benefit a wide range of tools (documentation, tests...)
That said, if you want to make "server-side-rendered" react web apps, like Next.js does, or if you need WebSockets, you'll need NodeJS on the server-side too. Also, the ability to use the same code, tooling and ecosystem on the client and the server is useful for a developer.
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I am a Java developer and I know Rest APIs. But what if I want to make great webpages using website building tools like WordPress and then with Rest API I can connect with my backend server.
Will that be a viable solution or I should look for something else?
On a very basic research I got to know that wordpress runs on PHP, but I am not looking to learn PHP at this point of time.
I am looking for the below things :
1 - Some tool which helps in building rich HTML page, that has drag
and drop options.
2 - I am thinking to use Spring boot for
configuring Rest API.
Basically I am looking for some suggestions in building good websites having knowledge of Java. (And yes I still need to learn Ajax and Javascript.)
I might be absolutely wrong on what I am looking, but any suggestion will be of great help.
A REST client (in your case a website) doesn't care what programming languages/technologies were used to create the server. You can have a server hosting a WordPress website (PHP) and have another server for your REST API created in Java or whatever other language you might want to use. If you want to make REST calls from your WordPress server (e.g. for server-side rendering), you'll need to use PHP. The more likely scenario is that the website makes REST requests from the browser, in which case you'll need to use JavaScript.
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Hi I am wanting to get into cross platform mobile app development. Can we go over the perks and cons of going with a native app or web app ?
The said cross platform mobile app would require a internet connection for it to run. Also can answers be based on:
Memory usage (secondary and primary)
run time speed, DB (SQL and NOSQL) access speed and support
potential portability (if native ease of conversion)
And finally last but not least, on the future "proof-ness" (direction
of development and support)
Edit: this is a reworked question..
If i wanted to take the shortest time to get to the market i would go with HTML/CSS/JS, using a framework to ease the edge cases in various platforms, my preference in that scenario would be ionic. If and only if my app thrived would i turn it native, i would make sure that the investment of going native would be worth the return. But if i had some time and it was medium term project that i wanted to implement with the edgiest and best of both worlds, i would go with something like nativescript. But that's just me
For a mobile application you should make it with Java for Android and Swift for iOS. HTML5 apps have many problems such as low performances (have you seen the speed of JavaScript animations on mobile browsers ? If there are animations, of course, most time websites disable it because of bad performances).
Native apps are compiled (semi-compiled for Android) but JavaScript is an interpreted language and performances on mobile phones are bad. I think you should develop your app with a native language.
Vaadin TouchKit
If your app is a web app, if it requires an Internet connection and cannot work offline, and you want a mobile-like user interface, and you want to program in pure Java server-side but auto-magically render to the client in standard web technology without having to learn HTTP, HTML, CSS, JavaScript, DOM, WebSocket, Push, and so on, then check out Vaadin and the add-on TouchKit.
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Recently I started reading about Smalltalk and its way of development and I was quite impressed. I was wondering whether there is some sort of library that makes possible the same way of development in JavaScript. I found some libraries but they just reload the page or restarts a running node.js server. I'm interested in both client side and server side JavaScript libraries. Amber Smalltalk is nice but I'm looking for a way to do the same in JS.
Edit: I'm looking for some sort of live editing of objects and prototypes and saving the changes to a file, or changing the contents of a file and the added methods are propagated to a running page or server. All this placed in an IDE similar to that of Pharo. What I found is that Meteor and Brackets support some kind of this functionality (live editing going from a source file to a browser).
You should have a look at "Lively", a project providing a Smalltalk-like environment in JavaScript:
http://lively-web.org/
It was initiated by Dan Ingalls, implementor of the original and later Smalltalks.
You can find an earlier version and some additional resources at http://lively-kernel.org/
There is also morphic.js, by Jens Mönig, which is the engine powering the Snap! graphical language/environment:
https://github.com/jmoenig/morphic.js
It is not client+server, but it is really easily portable to NodeJS.
Checkout LiveReload.js. Allows you to write javascript and changes are updated in realtime without refreshing the page using the LiveReload protocol.
Take a look at SqueakJS:
SqueakJS executes Squeak in a web page without a plugin. It is a fully
capable virtual machine implemented in pure JavaScript running
unmodified Squeak images. Squeak is a modern implementation of
Smalltalk, the original dynamic object-oriented programming
environment. It runs bit-identically on virtually any platform, and
now in the web browser, too.
https://bertfreudenberg.github.io/SqueakJS/
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I've done a bunch of web development with JSP/J2EE and some ASP.NET. Nevertheless, I still feel like I'm catching up with the web 2.0 stuff that relies heavily on JavaScript.
I have two questions:
I'm looking for great samples of web applications to learn development techniques. I prefer to look at real-world examples (i.e. something open source). I'm open to learning from any great code, regardless of language used on server side. The kind of example webapps I'm looking for are ones that clean and not too complex, but also not too trivial. I have checked out some code from google code project hosting, but I don't have time to download and look at hundreds of different projects, so I'm looking for suggestions.
Second question: I know Ruby on Rails was an innovative framework (which I've never used, but I'm familiar with it and I've played around with Grails, a similar framework but more Java-like). So rails is now a few years old. What are the major things we learned since the introduction of Rails and what does the next generation of web framework look like?
I knew that saving this tweet from Ruby News would come in handy.
Take a look at Chris Lowis's post: Open-source rails apps to study and learn from.
about the first question, I can suggest you TeamBox, very similar to Basecamp, but it's open source, with an avaiable repository on github. it's written in rails.
for the second question: for sure I learnt about MVC approach (I re-applied same philosophy to PHP in some works). the next generation frameworks are using even more abstractions and layers. for example using ORM libraries for different databases (you save time writing SQL queries, you can use same API for different databases, even for the new NoSQL storages).
I suggest you to look for Redis, CouchDB and MongoDB databases. they are different each other about approach and data-organization, but they are becoming very useful for complicated web-apps