GWT without JavaScript? - javascript

I was looking into GWT. It seems nice, but our software have the must work without JS requirement. Is it possible?

No, it isn't. GWT provides a windowing toolkit that is specifically designed to run on the client, not on the server. Degraded (e.g. non-javascript) code would need to deliver complete HTML to the browser, which GWT simply does not do. It compiles your java code to a javascript file that is delivered to the client and builds the UI by DOM-manipulation on the client. Then there's some code to talk back to the server, some implicit, some written by you yourself. This model does not lend itself well to degrading gracefully.
The only way to degrade somewhat gracefully is to provide a second, non-javascript UI or use another toolkit that doesn't render the frontend on the client but delivers HTML. Sorry.

You could degrade gracefully by creating an html structure that is just 'good enough' (with form posts, linked menus, etc) and then have GWT attach to each part of that structure, augmenting its behavior. For example, make an HTML drop down dynamic, replace a link to another page with a component that opens a lightbox, or replace a link to another page with an XML http request to do the same thing (e.g. cast a vote).
I've done this a number of times for clients.
It's the opposite way that most GWT gets developed, but it can work.

I was looking at this issue myself when designing my website. GWT isn't really any better than just writing Javascript files in that their syntax is almost identical. The true benefit comes when you share client and server libraries. Hopefully you've resolved this issue in the last two years, but at any rate here are a couple examples that you may find useful.
Creating Gmail: With GWT, you can create an EmailFormatter in a shared package that does the email listing markup so that your server doesn't have to. You could then add support for legacy browsers ("older version") by using the same EmailFormatter class on the server side.
Form verification: While is is absolutely necessary from a security perspective to validate user input server side, it is more convenient for most users to have Javascript check a form before it is submitted. You can use the same Java code with GWT to do this.

Related

Is there any difference between making DOM on the server/client side? (speed perspective) [duplicate]

I've done some web-based projects, and most of the difficulties I've met with (questions, confusions) could be figured out with help. But I still have an important question, even after asking some experienced developers: When functionality can be implemented with both server-side code and client-side scripting (JavaScript), which one should be preferred?
A simple example:
To render a dynamic html page, I can format the page in server-side code (PHP, python) and use Ajax to fetch the formatted page and render it directly (more logic on server-side, less on client-side).
I can also use Ajax to fetch the data (not formatted, JSON) and use client-side scripting to format the page and render it with more processing (the server gets the data from a DB or other source, and returns it to the client with JSON or XML. More logic on client-side and less on server).
So how can I decide which one is better? Which one offers better performance? Why? Which one is more user-friendly?
With browsers' JS engines evolving, JS can be interpreted in less time, so should I prefer client-side scripting?
On the other hand, with hardware evolving, server performance is growing and the cost of sever-side logic will decrease, so should I prefer server-side scripting?
EDIT:
With the answers, I want to give a brief summary.
Pros of client-side logic:
Better user experience (faster).
Less network bandwidth (lower cost).
Increased scalability (reduced server load).
Pros of server-side logic:
Security issues.
Better availability and accessibility (mobile devices and old browsers).
Better SEO.
Easily expandable (can add more servers, but can't make the browser faster).
It seems that we need to balance these two approaches when facing a specific scenario. But how? What's the best practice?
I will use client-side logic except in the following conditions:
Security critical.
Special groups (JavaScript disabled, mobile devices, and others).
In many cases, I'm afraid the best answer is both.
As Ricebowl stated, never trust the client. However, I feel that it's almost always a problem if you do trust the client. If your application is worth writing, it's worth properly securing. If anyone can break it by writing their own client and passing data you don't expect, that's a bad thing. For that reason, you need to validate on the server.
Unfortunately if you validate everything on the server, that often leaves the user with a poor user experience. They may fill out a form only to find that a number of things they entered are incorrect. This may have worked for "Internet 1.0", but people's expectations are higher on today's Internet.
This potentially leaves you writing quite a bit of redundant code, and maintaining it in two or more places (some of the definitions such as maximum lengths also need to be maintained in the data tier). For reasonably large applications, I tend to solve this issue using code generation. Personally I use a UML modeling tool (Sparx System's Enterprise Architect) to model the "input rules" of the system, then make use of partial classes (I'm usually working in .NET) to code generate the validation logic. You can achieve a similar thing by coding your rules in a format such as XML and deriving a number of checks from that XML file (input length, input mask, etc.) on both the client and server tier.
Probably not what you wanted to hear, but if you want to do it right, you need to enforce rules on both tiers.
I tend to prefer server-side logic. My reasons are fairly simple:
I don't trust the client; this may or not be a true problem, but it's habitual
Server-side reduces the volume per transaction (though it does increase the number of transactions)
Server-side means that I can be fairly sure about what logic is taking place (I don't have to worry about the Javascript engine available to the client's browser)
There are probably more -and better- reasons, but these are the ones at the top of my mind right now. If I think of more I'll add them, or up-vote those that come up with them before I do.
Edited, valya comments that using client-side logic (using Ajax/JSON) allows for the (easier) creation of an API. This may well be true, but I can only half-agree (which is why I've not up-voted that answer yet).
My notion of server-side logic is to that which retrieves the data, and organises it; if I've got this right the logic is the 'controller' (C in MVC). And this is then passed to the 'view.' I tend to use the controller to get the data, and then the 'view' deals with presenting it to the user/client. So I don't see that client/server distinctions are necessarily relevant to the argument of creating an API, basically: horses for courses. :)
...also, as a hobbyist, I recognise that I may have a slightly twisted usage of MVC, so I'm willing to stand corrected on that point. But I still keep the presentation separate from the logic. And that separation is the plus point so far as APIs go.
I generally implement as much as reasonable client-side. The only exceptions that would make me go server-side would be to resolve the following:
Trust issues
Anyone is capable of debugging JavaScript and reading password's, etc. No-brainer here.
Performance issues
JavaScript engines are evolving fast so this is becoming less of an issue, but we're still in an IE-dominated world, so things will slow down when you deal with large sets of data.
Language issues
JavaScript is weakly-typed language and it makes a lot of assumptions of your code. This can cause you to employ spooky workarounds in order to get things working the way they should on certain browsers. I avoid this type of thing like the plague.
From your question, it sounds like you're simply trying to load values into a form. Barring any of the issues above, you have 3 options:
Pure client-side
The disadvantage is that your users' loading time would double (one load for the blank form, another load for the data). However, subsequent updates to the form would not require a refresh of the page. Users will like this if there will be a lot of data fetching from the server loading into the same form.
Pure server-side
The advantage is that your page would load with the data. However, subsequent updates to the data would require refreshes to all/significant portions of the page.
Server-client hybrid
You would have the best of both worlds, however you would need to create two data extraction points, causing your code to bloat slightly.
There are trade-offs with each option so you will have to weigh them and decide which one offers you the most benefit.
One consideration I have not heard mentioned was network bandwidth. To give a specific example, an app I was involved with was all done server-side and resulted in 200Mb web page being sent to the client (it was impossible to do less without major major re-design of a bunch of apps); resulting in 2-5 minute page load time.
When we re-implemented this by sending the JSON-encoded data from the server and have local JS generate the page, the main benefit was that the data sent shrunk to 20Mb, resulting in:
HTTP response size: 200Mb+ => 20Mb+ (with corresponding bandwidth savings!)
Time to load the page: 2-5mins => 20 secs (10-15 of which are taken up by DB query that was optimized to hell an further).
IE process size: 200MB+ => 80MB+
Mind you, the last 2 points were mainly due to the fact that server side had to use crappy tables-within-tables tree implementation, whereas going to client side allowed us to redesign the view layer to use much more lightweight page. But my main point was network bandwidth savings.
I'd like to give my two cents on this subject.
I'm generally in favor of the server-side approach, and here is why.
More SEO friendly. Google cannot execute Javascript, therefor all that content will be invisible to search engines
Performance is more controllable. User experience is always variable with SOA due to the fact that you're relying almost entirely on the users browser and machine to render things. Even though your server might be performing well, a user with a slow machine will think your site is the culprit.
Arguably, the server-side approach is more easily maintained and readable.
I've written several systems using both approaches, and in my experience, server-side is the way. However, that's not to say I don't use AJAX. All of the modern systems I've built incorporate both components.
Hope this helps.
I built a RESTful web application where all CRUD functionalities are available in the absence of JavaScript, in other words, all AJAX effects are strictly progressive enhancements.
I believe with enough dedication, most web applications can be designed this way, thus eroding many of the server logic vs client logic "differences", such as security, expandability, raised in your question because in both cases, the request is routed to the same controller, of which the business logic is all the same until the last mile, where JSON/XML, instead of the full page HTML, is returned for those XHR.
Only in few cases where the AJAXified application is so vastly more advanced than its static counterpart, GMail being the best example coming to my mind, then one needs to create two versions and separate them completely (Kudos to Google!).
I know this post is old, but I wanted to comment.
In my experience, the best approach is using a combination of client-side and server-side. Yes, Angular JS and similar frameworks are popular now and they've made it easier to develop web applications that are light weight, have improved performance, and work on most web servers. BUT, the major requirement in enterprise applications is displaying report data which can encompass 500+ records on one page. With pages that return large lists of data, Users often want functionality that will make this huge list easy to filter, search, and perform other interactive features. Because IE 11 and earlier IE browsers are are the "browser of choice"at most companies, you have to be aware that these browsers still have compatibility issues using modern JavaScript, HTML5, and CSS3. Often, the requirement is to make a site or application compatible on all browsers. This requires adding shivs or using prototypes which, with the code included to create a client-side application, adds to page load on the browser.
All of this will reduce performance and can cause the dreaded IE error "A script on this page is causing Internet Explorer to run slowly" forcing the User to choose if they want to continue running the script or not...creating bad User experiences.
Determine the complexity of the application and what the user wants now and could want in the future based on their preferences in their existing applications. If this is a simple site or app with little-to-medium data, use JavaScript Framework. But, if they want to incorporate accessibility; SEO; or need to display large amounts of data, use server-side code to render data and client-side code sparingly. In both cases, use a tool like Fiddler or Chrome Developer tools to check page load and response times and use best practices to optimize code.
Checkout MVC apps developed with ASP.NET Core.
At this stage the client side technology is leading the way, with the advent of many client side libraries like Backbone, Knockout, Spine and then with addition of client side templates like JSrender , mustache etc, client side development has become much easy.
so, If my requirement is to go for interactive app, I will surely go for client side.
In case you have more static html content then yes go for server side.
I did some experiments using both, I must say Server side is comparatively easier to implement then client side.
As far as performance is concerned. Read this you will understand server side performance scores.
http://engineering.twitter.com/2012/05/improving-performance-on-twittercom.html
I think the second variant is better. For example, If you implement something like 'skins' later, you will thank yourself for not formatting html on server :)
It also keeps a difference between view and controller. Ajax data is often produced by controller, so let it just return data, not html.
If you're going to create an API later, you'll need to make a very few changes in your code
Also, 'Naked' data is more cachable than HTML, i think. For example, if you add some style to links, you'll need to reformat all html.. or add one line to your js. And it isn't as big as html (in bytes).
But If many heavy scripts are needed to format data, It isn't to cool ask users' browsers to format it.
As long as you don't need to send a lot of data to the client to allow it to do the work, client side will give you a more scalable system, as you are distrubuting the load to the clients rather than hammering your server to do everything.
On the flip side, if you need to process a lot of data to produce a tiny amount of html to send to the client, or if optimisations can be made to use the server's work to support many clients at once (e.g. process the data once and send the resulting html to all the clients), then it may be more efficient use of resources to do the work on ther server.
If you do it in Ajax :
You'll have to consider accessibility issues (search about web accessibility in google) for disabled people, but also for old browsers, those who doesn't have JavaScript, bots (like google bot), etc.
You'll have to flirt with "progressive enhancement" wich is not simple to do if you never worked a lot with JavaScript. In short, you'll have to make your app work with old browsers and those that doesn't have JavaScript (some mobile for example) or if it's disable.
But if time and money is not an issue, I'd go with progressive enhancement.
But also consider the "Back button". I hate it when I'm browsing a 100% AJAX website that renders your back button useless.
Good luck!
2018 answer, with the existence of Node.js
Since Node.js allows you to deploy Javascript logic on the server, you can now re-use the validation on both server and client side.
Make sure you setup or restructure the data so that you can re-use the validation without changing any code.

Rails: Not ember, not JS responses, but something in-between

I am developing a standard rails application, and so far I haven't used any AJAX, just good ol' HTML. My plan is to iteratively add "remote" links and all that kind of stuff and support for JS responses, because I know that generating JS server side is very very evil, but I find it to be very handy as well, easy, fast and it makes the application snappy enough and i18n comes out-of-the-box.
Using a pure JSON approach would be lighter, but needs lots of client-side coding.
Now imagine that in this application users have a mailbox, and since the idea is that they will be able to do most or even all of the actions without reloading the page, the mailbox counter will never change unless they refresh the page manually.
So, here comes the question: Which is the best way to handle this?
I thought about using Ember (for data binding), and sharing views with rails, via some sort of handlebars implementation for ruby. That would be quite awesome, but not very transparent for the developer (me). Although I guess that I only need to write handlebars views that will be used by ember, the rest can still be written in their original format, no?
Another option might be to use some sort of event system (EventSource maybe?), and just go with handy the JS views approach, and listen to those events. I guess those should be JSON objects, and the client must be coded to be able to handle them. This seems a bit cumbersome, and I need a solution for heroku (faye?), which is where my app is hosted. Any hints?
I think that the ember approach is the more robust one, but seems to be quite complex as well, and I don't want to repeat myself server and client side.
EDIT:
I have seen this, which is more or less the option #2.
One of the advantages of using a JavaScript framework is that the whole application can be concatenated and compressed into one JavaScript file. Provided that modern browsers aggressively cache JavaScript, the browser would no longer need to request those assets after initial page load.
Another advantage of using a JavaScript framework is that it requires you to be a consumer of your own API. Fleshing out the application's API for your own consumption might lend to less work in the future if there is a possibility of mobile applications or 3rd parties having access to it.
If you do not need your application to respond to every request with an equivalent HTML response, I think a compelling case could be made for using a JavaScript framework.
Many of those benefits might be lost if your application needs to respond to every request with an equivalent HTML template. The Ember core has been relatively vocal and in opposition to supporting this style of progressive enhancement. Considering the tools for using a JavaScript framework in this way are relatively unstable and immature, I might be prone to using option 2 to accomplish this.

Backbone.js without client-side javascript

I'm looking into using Backbone.js and node.js to write a small web app. Sharing code between the client and sever is attractive.
I can't figure out how clients without JS (and search engines) should interact with the site. How should form validations and rendering work with no client-side JavaScript work?
Of course, I'd like to do this without code duplication. Seems to me the point of Backbone.js and other server-side js is that you can have the same form validations and template/view generation on the server AND client.
If you have your view coded with javascript, search engines are buggered as they conform to a more traditional web (one url, one state, one page) and don't understand javascript.
You need to use graceful up-gradation if you want to provide a rich experience and support search engines.
With graceful up-gradation, you code your website with no client side javascript, get it all working nice a nifty. Then you use javascript to upgrade the experience. In most cases this is actually easier, as the upgrade process can be automated. See https://github.com/browserstate/ajaxify
Validating the form data on the client side is a good practice because it saves a user from potentially having to re-enter what was written if it does not validate on the server. Validating on the client side does not remove the need to validate on the server, as your question helps point out, because there is no guarantee JavaScript will be running or even that the form used is the one on your server.

Execute javascript on IIS server

I have the following situation. A customer uses JavaScript with jQuery to create a complex website. We would like to use JavaScript and jQuery on the server (IIS) for the following reasons:
Skills transfer - we would like to use JavaScript and jQuery on the server and not have to use eg VB Script. / classic asp. .Net framework/Java etc is ruled out because of this.
Improved options for search/accessibility. We would like to be able to use jQuery as a templating system, but this isn't viable for search engines and users with js turned off - unless we can selectively run this code on the server.
There is significant investment in IIS and Windows Server, so changing that is not an option.
I know you can run jScript on IIS using windows Script host, but am unsure of the scalability and the process surrounding this. I am also unsure whether this would have access to the DOM.
Here is a diagram that hopefully explains the situation. I was wondering if anyone has done anything similar?
EDIT: I am not looking for critic on web architecture, I am simply wanting to know if there are any options for manipulating the DOM of a page before it is sent to the client, using javascript. Jaxer is one such product (no IIS) Thanks.
Have a look at bringing the browser to the server, Rhino, and Use Microsoft's IIS as a Java servlet engine.
The first link is from John Resig's (jQuery's creator) blog.
Update August 2 2011
Node.js is coming to Windows.
The idea to reuse client JS on the server may sound tempting, but I am not sure that jQuery itself would be ready to run in server environment.
You will need to define global context for jQuery somehow by initializing window, document, self, location, etc.. I am not sure it is doable.
Besides, as Cheeso has mentioned, Active Server Pages is a very outdated technology, it was replaced with ASP.Net by Microsoft in the beginning of the century. I used to maintain a legacy system using ASP 3.0 for more than a year and that was pain. The most wonderful pastime was debugging: you will hardly find anything for the purpose today and will have to decript beautiful errors like in IIS log:
error '800a9c68'
Application-defined or object-defined error
Nevertheless, I can confirm that I managed to reuse client and server JScript. But this was code written by me who knew that it was going to be used on the server.
P.S. I would not recommend move that way. There are plenty templating frameworks which are familiar to those who write HTML and JavaScript.
JScript runs on IIS via something called ASP.
Active Server Pages.
It was first available in 1996.
Eventually ASP.NET was introduced as a successor. But ASP is still supported.
There is no DOM for the HTML page, though.
You might need to reconsider your architecture a bit.
I think the only viable solutions you're likely to find anywhere near ready to go involve putting IIS in front of Java. There are two browser-like environments I'm aware of coded for Java:
1) Env-js (see http://groups.google.com/group/envjs and http://github.com/thatcher/env-js )
I believe this one has contributions from jQuery's John Resig and was put together with jQuery testing/support in mind.
2) HTMLUnit (see http://htmlunit.sourceforge.net/ ) This one's older, and wasn't originally conceived around jQuery, but there are reports in the wild of using it to run jQuery's test suite successfully (http://daniel.gredler.net/2007/08/08/htmlunit-taming-jquery/ ).
If you want something pure-IIS/MS, I think your observation about windowsScript host and/or something like the semi-abandoned JScript.NET is probably about as close as you're going to come, along with a port (which you'll probably have to start) of something like Env-js or HTMLUnit.
Also, I don't know if you've seen the Wikipedia list of server-side JavaScript solutions:
http://en.wikipedia.org/wiki/Server-side_JavaScript
Finally... you could probably write a serviceable jQuery-like library in any language that already has some kind of DOM library and first-class functions (or, failing that an eval facility). See, for example pQuery for Perl (http://metacpan.org/pod/pQuery ). This would get you the benefits of the jQuery style of manipulating documents. Skill transfer is great and JavaScript has a wonderful confluence of very nice features, but on the other hand, having developers who care enough to learn multiple languages is also great, and js isn't the only nice language out there.
I think it's mainly a browser based script so probably you are better of using technologies based on VB or .NET to perform or generate HTML from templates. I'm sure there are because in the java world there are a few of these around (like velocity). You'd then use jQuery to create or add client side functionality and usability so it makes the website more usable than it would have been.
What exactly do you mean by
"A customer uses JavaScript with
jQuery to create a complex website"
Half the point of jQuery is to make it easy for the developer to manipulate the DOM, and therefore add interactive enhancements to a web site. By running the Javascript on the server and only rendering HTML you will lose the ability to add these enhancements, without doing a round trip to the server (think WebForms postback model...ugh).
Now if what you really mean is the customer uses a site builder based on jQuery, why not have that tool output flat HTML in the first place?
Take a look at this technology. You can invoke scripts to run at server, at client, or both. Plus, this really implements the firefox engine on the server. Take a look at it.
Aptana's Jaxer is the first AJAX web server so far. I have not tryed it yet, but I will. Looks promising and very powerful.

Server Side Javascript: Why?

Is the use of server side javascript prevalent? Why would one use it as opposed the any other server side scripting? Is there a specific use case(s) that makes it better than other server side languages?
Also, confused on how to get started experimenting with it, I'm on freeBSD, what would I need installed in order to run server side javascript?
It goes like this:
Servers are expensive, but users will give you processing time in their browsers for free. Therefore, server-side code is relatively expensive compared to client-side code on any site big enough to need to run more than one server. However, there are some things you can't leave to the client, like data validation and retrieval. You'd like to do them on the client, because it means faster response times for the users and less server infrastructure for yourself, but security and accessibility concerns mean server-side code is required.
What typically happens is you do both. You write server-side logic because you have to, but you also write the same logic in javascript in hopes of providing faster responses to the user and saving your servers a little extra work in some situations. This is especially effective for validation code; a failed validation check in a browser can save an entire http request/response pair on the server.
Since we're all (mostly) programmers here we should immediately spot the new problem. There's not only the extra work involved in developing two sets of the same logic, but also the work involved in maintaining it, the inevitable bugs resulting from platforms don't match up well, and the bugs introduced as the implementations drift apart over time.
Enter server-side javascript. The idea is you can write code once, so the same code runs on both server and client. This would appear to solve most of the issue: you get the full set of both server and client logic done all at once, there's no drifting, and no double maintenance. It's also nice when your developers only need to know one language for both server and client work.
Unfortunately, in the real world it doesn't work out so well. The problem is four-fold:
The server view of a page is still very different from the client view of a page. The server needs to be able to do things like talk directly to a database that just shouldn't be done from the browser. The browser needs to do things like manipulate a DOM that doesn't match up with the server.
You don't control the javascript engine of the client, meaning there will still be important language differences between your server code and your client code.
The database is normally a bigger bottleneck than the web server, so savings and performance benefit ends up less than expected.
While just about everyone knows a little javascript, not many developers really know and understand javascript well.
These aren't completely unassailable technical problems: you constrain the server-supported language to a sub-set of javascript that's well supported across most browsers, provide an IDE that knows this subset and the server-side extensions, make some rules about page structure to minimize DOM issues, and provide some boiler-plate javascript for inclusion on the client to make the platform a little nicer to use. The result is something like Aptana Studio/Jaxer, or more recently Node.js, which can be pretty nice.
But not perfect. In my opinion, there are just too many pitfalls and little compatibility issues to make this really shine. Ultimately, additional servers are still cheap compared to developer time, and most programmers are able to be much more productive using something other than javascript.
What I'd really like to see is partial server-side javascript. When a page is requested or a form submitted the server platform does request validation in javascript, perhaps as a plugin to the web server that's completely independent from the rest of it, but the response is built using the platform of your choice.
I think a really cool use of server-side Javascript that isn't used nearly often enough is for data validation. With it, you can write one javascript file to validate a form, check it on the client side, then check it again on the server side because we shouldn't trust anything on the client side. It lets you keep your validation rules DRY. Quite handy.
Also see:
Will server-side Javascript take off? Which implementation is most stable?
When and how do you use server side JavaScript?
Javascript is just a language. Because it is just a language, you can use it anywhere you want... in your browser, on the server, embedded in other applications, stand-alone applications, etc.
That being said, I don't know that there is a lot of new development happening with "Server-Side Javascript"
Javascript is a perfectly good language with a self / scheme prototype style base and a C style syntax. There are some problems, see Javascript the Good Parts, but in general it's a first rate language. The problem is that most javascript programmers are terrible programmers because it's very accessible to get started.
One team at google built out Rhino on Rails, which is an MVC framework like Ruby on Rails which is written in javascript and runs on Rhino a javascript interpreter for the Java VM. In this case they had a requirement to use the Java VM, but wanted to get a language which was fast (javascript is fast), supported duck typing, and was flexible.
Another example is something like CouchDB, a document oriented database which uses json as it's transport format and javascript as it's query & index language. They wanted the database to be as web native as possible.
Javascript is good at string and dom (xml) manipulation, being sandboxed, networking, extending itself, etc... Those kind of features are the thing you often do when developing web applications.
All that said, i don't actually develop server side javascript. It's not a bad idea, but definitely less common.
We use javascript on the client because it is there, not because from a list of languages it was our choice. I wouldn't choose it for any chore on the server.
You can run any language you like on the server, in fact, as many as you like.
javascript is reliable and easy to use, but it is just too labor intensive for common tasks on the server.
I have used both Javascript (NodeJS) and compiled languages (such as Java or C#.NET). There are huge discussions on the internet about which is preferable. This question is very old (2009). Since then the Javascript world has changed considerably, whereas honestly the Java world has not changed much (relatively).
There have been huge advancements in the Javascript world with Typescript, amazing frameworks (such as Next.JS), reactive programming, functional programming, GraphQL, SSR etc.
When I look at compiled code, especially Java code it all still seems to be the same old tools - Spring (maybe SpringBoot) and Jackson. .NET has advanced server side, but not to the extent of the JS world.
Sure my list there can be used with several languages, but I believe Javascript has improved the software engineering world considerably.
Server side development with Javascript, Typescript and NodeJs is engaging, fun and productive. Use it and enjoy it. Like millions are today.

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