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Flask vs JavaScript: What are the differences?

Flask is a lightweight web framework for Python, while JavaScript is a versatile programming language commonly used for client-side web development. Let's explore the key differences between them.

  1. Back-end vs Front-end: Flask is a back-end web framework written in Python, whereas JavaScript is a front-end programming language primarily used for client-side web development. Flask focuses on server-side logic and handling requests, while JavaScript is responsible for manipulating and interacting with HTML elements on the user's browser.

  2. Language Structure: Flask utilizes Python, an object-oriented language known for its simplicity and readability. On the other hand, JavaScript is a versatile scripting language that supports both procedural and object-oriented programming paradigms. It provides more flexibility and options for coding approaches.

  3. Execution Environment: Flask executes on the server-side, processing requests and generating dynamic content on the server before sending it to the client. JavaScript, on the other hand, runs directly in the user's browser, allowing for real-time interactivity and dynamic updates without the need for server communication.

  4. Framework vs Language: Flask is a framework that provides a set of tools and libraries specifically designed for web development. It offers features like routing, template rendering, and database integration. JavaScript, on the other hand, is a standalone programming language that can be used in different contexts, including web development.

  5. Dependencies: Flask requires a Python interpreter and additional packages to run, which need to be installed separately. JavaScript, on the other hand, is natively supported by web browsers, so no additional installations are necessary.

  6. Server-side Rendering vs Client-side Rendering: Flask renders web pages on the server-side, meaning the HTML content is generated on the server and sent to the client. JavaScript allows for client-side rendering, where the HTML structure is initially delivered to the browser, and then JavaScript modifies and updates the content dynamically without additional server requests.

In summary, Flask is a Python-based back-end web framework that focuses on server-side logic, while JavaScript is a versatile scripting language primarily used for client-side web development, providing real-time interactivity and dynamic content updates on the user's browser.

Advice on Flask and JavaScript
Needs advice
on
JavaJavaJavaScriptJavaScript
and
PythonPython

I am new to programming and am a university student. While Computer Science is not my area of study, I am majoring in a subject that branches off computer science and health informatics, which deals with databases. I am currently in a programming fundamentals course at my university. My instructor mentioned that he develops in Java, but I have heard many good things about Python and JavaScript before taking his course; while we are only doing the fundamentals, I believe he is teaching us some in Java.

Since I am new to this, I'm not sure what I like more. I have also been self-teaching before this course but have not gotten deep into a particular language's fundamentals. I want to decide on a language and stick to it before I move to a new one after the first language is learned, but it is difficult deciding which language to start with. I want to develop medical software and medical mobile apps.

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Replies (10)
Dimelo Waterson
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on
JavaJava

There's a reason many universities start with Java- it has strict rules and lays out code in a straightforward (if excessively-boiler-plate-heavy) way. For a beginner, Java is an excellent way to learn the fundamentals of programming before taking off the training wheels and continuing in more flexible, less-syntactically-rigorous direction like Python or JavaScript.

Sticking to a language before moving on is a common goal. However, in reality you are going to transition as you find languages that better suit you or your organization's requirements. Start with Java, not because it is optimal for your end goals, but because it will teach you what you like and dislike about programming and because your instructor is more familiar with it. That will give you a valuable perspective and allow you to make a more informed decision later.

There are many ways to solve problems in different languages, but the "best" language pragmatically is the one that you feel most comfortable using. In that respect, programming is like woodworking- you want to let the tool do the work. If there is another language that is "better" objectively but more difficult or confusing to you, you will counteract the anticipated benefits by having to struggle to write code.

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Recommends
on
JavaJava

The only way to solve this problem while avoiding opinions and tastes is to objectively look at what you are trying to build.

Thus the most efficient part of your question is your last sentence: you want to build medical software and medical mobile apps.

In that case, the answer is definitely Java, as is for all "real" software projects.

Python is good for data science, in other words for statistics. Its other competitive advantage is that it is easy to learn for beginners, but that would be a bad reason to use it for a "real" software project.

JavaScript is a mess you don't want to get into. The major reason why it's popular is that many people learn it first, because its very basic features are easy to learn, although they don't get you far, and because it used to have exclusivity on the web. But in reality it will make your life a lot harder after a few weeks, without any benefit. I know I'll get criticisms for that, but I stand fully by this position.

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Recommends
on
PythonPython

try with python because easy ... its good for u when u are learning basic's and they have many library that help's u with mobile app and desktop application but it is not the best ... when u are learn programming will with python then start with js basic's and then (react native) or flutter and also u can use java for mobile development bur i recommend first choices ..and for Desktop application java is have an amazing library (java fx ) for this type of application's and C# is one of most powerful language's for software development . good luck

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Taimoor Mirza
Associate Software Engineer at Intech Process Automation · | 4 upvotes · 193K views
Recommends
on
JavaJavaPythonPython

Since you're already taking a CS course which involves Java, I would recommend you to keep learning it. Java's statically typed & OO nature forces you to learn a lot of important yet common programming fundamentles. C++, C# and Java type languages also force you write code more carefully (you have to think about the data types on your own and even allocate/de-allocate memories [C++ pointers]). That's why colleges prefer it as go to language for teaching CS concepts.

On the other hand, JS, Python and other such languages are dynamic in nature and hence, easy to learn. But you can't learn certain concepts (polymorphism, abstract classes, diamond problem etc) using these languages. So it makes sense to stick with Java in your case.

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Recommends
on
JavaJava

Since your instructor is using Java, i'd start with Java. If you want to get into mobile development, I'd check out flutter / dart. Good luck!

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My advice to anyone learning to program is to not obsess on the language.. You SHOULD learn all languages.. Same as learning human spoken languages - the more you learn, the more ways your mind can interpret a new problem set. Learning them at the same time isn't a big deal (just like growing up in a bilingual home). Your language and your software stack are guaranteed to change 3 times in your career. Don't assume you're going to choose the "right one". And you wont waste any time learning one you never wind up using.

As a person who works on linux and OSX desktops, I have a personal bias against working for companies and software stacks that require C# or Visual Studio. But this is not due to their technical merits, but instead the OS as a platform condusive to efficient CLI toolchains and container management. But aside from that, I can use vi/IntelliJ-suite to write most languages, so language isn't a real concern. If you're windows bound, pretty much everything is available to you (through VMs and docker).

Ideally you do at least SOME full stack development learning. This means you'll need javascript, and thus nodejs would be a good stack to learn. If you ultimately like gaming or 3D, you might need C# and certainly python.

Any AI (which is a hot employment topic for the forseeable future) would like python skillz.

I personally love Java (and Android's Kotlin varient) for it's very very well designed multi-threaded libraries. go and rust are newer and thus do a slightly better job at this, but due to the open-source nature of java and editors that auto-reveal function call source code, it's very easy to learn how vendors implemented MT code and various other algorithms. Python should be equally "open" to 3rd party library review (and thus again how they solve complex problems), though a lot of times, I see python resorting to compiled C-libraries (and thus the cost to crack open the code and or trace through the code becomes too burdensome to bother).

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Recommends
on
JavaJavaPythonPython

While I've seen many people recommend Java (and I agree with them), I think you can learn both. But it depends on how much time you got. I recommend you first learn Java. Then python will be easy to learn, and focus mainly on modules for graphs. The reason why I recommend to learn both is because python is much better and easier to code about statistical analysis. But again do this only if you have time to just learn them.

If your project doesn't have anything to do with statistics and data analysis (I'm pretty sure you do though), learn only java. Also if you are wondering why I never mentioned JavaScript (JS), it's because i really don't recommend it. JS is much harder to learn and requires a lot of lines of code to do simple things.

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Srikanth Gopalakrishnan
Founder at TheDatingClub · | 2 upvotes · 195.6K views
Recommends
on
JavaJavaPythonPython

Although java seems to be a good fit for you. It is a cumbersome language to get started out. It will be far easier for you to learn Python and stick with it long term. This is due to the fact you will be easily able to google things for python and you will spend less time learning the language, and more time using it to do what you want.

Making mobile apps is easier with Java due to the fact that google does not directly support app building with python. If this is your biggest priority stick with Java.

Javascript: This language is the best language to learn if you are making a website. However, for easy of use you can do all the database access stuff with python. And send back the data to your website. Javascript is also another cumbersome language in my opinion.

Each language has its use. If I were In your situation, I would choose the language that's easy to start with.

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Recommends
on
JavaJava

It would be great if you first go with Java. It could give you complete understanding of programming concepts. Such as data types. Later you can move to Python , which is great for data processing and Machin learning stuff.

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There is always trade off between them. If you want to make mobile app JavaScript is better. I suggest start the one you feel more close and learn all of them :) You are quite young you have enough time for them.

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Needs advice
on
Java EEJava EE
and
JavaScriptJavaScript

Hi, I'm looking to learn Java EE and JavaScript.... but confused about exactly the difference between J2EE and JavaScript.....are both interconnected or different??? And if I want to learn both, should I learn JavaScript first and then touch J2EE or learn J2EE first and then JavaScript??.... please suggest

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Replies (2)
Joshua H
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Java EEJava EEJavaScriptJavaScript

They have nothing in common except the name Java. J2EE is the enterprise edition of Java and JavaScript is a web-based programming language without typing etc. There are a lot of differences between them and they serve very different purposes. If you want to get into web development learn JS, if you want to get into e.g. android development go for Java.

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Recommends
on
Java EEJava EE

Java EE is an Enterprise environment based on the Java language. Javascript is a language originally developed for use in web browsers. Javascript and Java are not the same language. Not even close. They share no history. All they have in common is the first four letters of there name. You can use Javascript as part of the web ui for a Java EE application, but in that case the Javascript files are just payload to the Java EE application, on a par with a plain HTML file. They get sent to the user's browser, which is where the Javascript would execute.

If you really only want to learn the one language and don't need the Enterprise features of Java EE then consider Node.js, which uses Javascript on both the server and the client. I've not used that myself, however.

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kristan-dev
Senior Solutions Analyst · | 8 upvotes · 352.3K views

My journey to developing REST APIs started with Flask Restful, and I've found it to be enough for the needs of my project back then. Now that I've started investing more time on personal projects, I've yet to decide if I should move to use Django for writing REST APIs. I often see job posts looking for Python+Django developers, but it's usually for full-stack developers. I'm primarily interested in Data Engineering, so most of my web projects are back end.

Should I continue with what I know (Flask) or move on to Django?

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Replies (1)
Rafael Torres
Technical Lead at 4Agile · | 9 upvotes · 342.8K views

If you want to be a Web developer with knowledge in another frontend and NoSql technology, maybe continue with Flask. However, if you want to create very fast solutions to grow up with a new business and merge these with data analysis and other tools, Django is the answer. Basically read more about the service architecture where you feel more comfortable, Microservice or Monolithic, but please will not married with any because they solve issues to different contexts.

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Needs advice
on
JavaScriptJavaScriptPythonPython
and
RustRust

So, I've been working with all 3 languages JavaScript, Python and Rust, I know that all of these languages are important in their own domain but, I haven't took any of it to the point where i could say I'm a pro at any of these languages. I learned JS and Python out of my own excitement, I learned rust for some IoT based projects. just confused which one i should invest my time in first... that does have Job and freelance potential in market as well...

I am an undergraduate in computer science. (3rd Year)

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Replies (3)
Recommends
on
JavaScriptJavaScript

I would start focusing on Javascript because even working with Rust and Python, you're always going to encounter some Javascript for front-ends at least. It has: - more freelancing opportunities (starting to work short after a virus/crisis, that's gonna help) - can also do back-end if needed (I would personally avoid specializing in this since there's better languages for the back-end part) - hard to avoid. it's everywhere and not going away (well not yet)

Then, later, for back-end programming languages, Rust seems like your best bet. Its pros: - it's satisfying to work with (after the learning curve) - it's got potential to grow big in the next year (also with better paying jobs) - it's super versatile (you can do high-perf system stuff, graphics, ffi, as well as your classic api server) It comes with a few cons though: - it's harder to learn (expect to put in years) - the freelancing options are virtually non-existent (and I would expect them to stay limited, as rust is better for long-term software than prototypes)

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Recommends
on
JavaScriptJavaScript

I suggest you to go with JavaScript. From my perspective JavaScript is the language you should invest your time in. The community of javascript and lots of framework helps developer to build what they want to build in no time whether it a desktop, web, mobile based application or even you can use javascript as a backend as well. There are lot of frameworks you can start learning i suggest you to go with (react,vue) library both are easy to learn than angular which is a complete framework.

And if you want to go with python as a secondary tool then i suggest you to learn a python framework (Flask,Django).

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Moinul Moin
Recommends
on
JavaScriptJavaScript

go for javascript, brother.

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Needs advice
on
DartDartDjangoDjango
and
JavaScriptJavaScript

I am currently learning web development with Python and JavaScript course by CS50 Harvard university. It covers python, Flask, Django, SQL, Travis CI, javascript,HTML ,CSS and more. I am very interested in Flutter app development. Can I know what is the difference between learning these above-mentioned frameworks vs learning flutter directly? I am planning to learn flutter so that I can do both web development and app development. Are there any perks of learning these frameworks before flutter?

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Replies (5)
Gagan Jakhotiya
Engineering Manager at BigBasket · | 11 upvotes · 223.5K views
Recommends
on
Node.jsNode.js

Hey Muhamed, For web development, you'll have to learn how to write backend APIs and how to build UI for browsers, apps, etc. If you're just starting off with programming, I'd suggest you stick to one language and trying developing everything using it to cut the unnecessary learning overhead. Although Python and JavaScript are very similar for beginners, JavaScript is the only available option for both frontend and backend development for a web application. You can start working with Node.js for your API development and Vanilla JS along with HTML/CSS for UI. You'll only need to learn one language to do all of this. Hope this helps.

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Dennis Barzanoff
Recommends
on
DartDart

Flutter is good for everything and it is getting better as I am speaking. Flutter Web is almost ready for production and I have made 2 complex working websites already.

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Yohnathan Carletti
Senior Technical Product Manager · | 3 upvotes · 217.5K views
Recommends
on
DartDart

From a management and hiring perspective, I recommend Flutter (Dart). It provides native solutions to both mobile platform ( (Android and IOS) while having the same knowledge. Hiring managers look at this as an advantage since a developer can provide solutions for both platforms whit the same knowledge. The Flutter framework is growing and there is a lot of resources to ground your knowledge and start experimenting. Dart is also a great language that covers most E2E necessities, so again, no further need of learning one language for FE and another for BE and services. It is my belief that Dart will surpass Kotlin soon, and will leverage to Python and Java in the upcoming year.

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Recommends
on
DartDart

Well. Flutter is just a Framework (just like Django btw.) and it uses Dart as a programming language. Django is kind of solving a different problem than Dart. Dart is intened for use in Front End Applications and Django is a Framework for Back-End Web Development.

So if you want to program Flutter Apps (although i wouldn't recommend it for any serious web development yet since Flutter web isn't very mature yet) i would recommend you just lern Dart.

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Recommends
on
DartDart

If you are interested in Flutter, learn it on your own time, parallel to the course. No matter what order you do them, eventually you will end up learning them all anyway ;-)

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Girish Sharma
Software Engineer at FireVisor Systems · | 6 upvotes · 279.3K views
Needs advice
on
BottleBottleFlaskFlask
and
NamekoNameko

Which is the best Python framework for microservices?

We are using Nameko for building microservices in Python. The things we really like are dependency injection and the ease with which one can expose endpoints via RPC over RabbitMQ. We are planning to try a tool that helps us write polyglot microservices and nameko is not super compatible with it. Also, we are a bit worried about the not so good community support from nameko and looking for a python alternate to write microservices.

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Replies (1)
Recommends
on
BottleBottle

Bottle is much less bloated and fast. Its built-in templating system is one of the fastest as it compiles the templates in bytecode. Also Bottle has no depenencies, preventing dependency bloat.

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Saurav Pandit
Application Devloper at Bny Mellon · | 6 upvotes · 297.4K views

I have just started learning Python 3 weeks ago. I want to create a REST API using python. The API will be used to save form data in an Oracle database. The front end is using AngularJS 8 with Angular Material. In python, there are so many frameworks to develop REST APIs.

I am looking for some suggestions which REST framework to choose?

Here are some features I am looking for:

  • Easy integration and unit testing, like in Angular. We just want to run a command.

  • Code packaging, like in java maven project we can build and package. I am looking for something which I can push in as an artifact and deploy whole code as a package.

  • Support for swagger/ OpenAPI

  • Support for JSON Web Token

  • Support for test case coverage report

Framework can have features included or can be available by extension. Also, you can suggest a framework other than the ones I have mentioned.

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Replies (1)
Recommends
on
FlaskFlask
at

For starters flask provides a beautiful and easy way to create REST APIs. Also its supported by excellent beginner docs as well as a very active community. Another good thing with Flask is its widely available list of plugins which allow you to build as you go. Its also good in performance and can scale to a quite decent level. However, if you are sure your project is going to be fairly big, it would be better to start with Django as it provides a lot of features out of the box and is extremely stable in performance. Both these frameworks have support for Swagger, JWT, Coverage Report although you have to install plugins for them. Deploying both of these are fairly simple and there is huge documentation available. Django has one of the best documentations I have come across. I hope I was able to answer your queries.

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Needs advice
on
GolangGolangJavaScriptJavaScript
and
PythonPython

We are converting AWS Lambdas from Java due to excessive cold start times. Usage: These lambdas handle XML and JSON payloads, they use s3, API Gateway, RDS, DynamoDB, and external API's. Most of our developers are only experienced in java. These three languages (Go, Node.js, and Python) were discussed, but no consensus has been reached yet.

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Replies (5)
Jordan Gregory
Cloud Operations Manager at Plainsight AI · | 4 upvotes · 399K views
Recommends
on
GolangGolang

I've worked with all three of these languages and also with Java developers converting to these languages and far and away Go is the easier one to convert to. With the improved cold-start times and the ease of conversion for a Java developer, it is a no-brainer for me.

The hardest part of the conversion though is going to be the lack of traditional Classes so you have to be mindful of that, but Go Structs and interfaces tend to make up for what is lost there.

Full Disclosure: I'm a 95% Go convert (from Python) at this point in time.

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Ahmet Yildirim
Software Engineering Consultant at UXCraft Sweden AB · | 3 upvotes · 399K views
Recommends
on
GolangGolang

Although I am primarily a Javascript developer myself, I used Go to build AWS lambda in a similar scenario to yours. AWS libraries felt better integrated on the Go side, I believe due to the language itself (e.g. how JSON objects are handled in go). Besides that performance of Go is much superior. But on the cons side; community is far smaller around Go, compared to Javascript. That is easy notice if you look at repos of community-maintained libraries for Go. That can feel a bit unreliable.

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Jason Scheirer
Senior Software Engineer at EasyPost · | 2 upvotes · 398.6K views
Recommends
on
GolangGolang

Go would provide the easiest transition for Java programmers -- its IDE/tooling is second to none (just install Goland) and the deploy/distribution story is extremely clean and lends itself to work well in lambda: single, static binaries with quick startup. No need to set up a full environment or package dependencies on your lambda AMIs, just copy a file.

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Russel Werner
Lead Engineer at StackShare · | 1 upvotes · 398.5K views
Recommends
on
JavaScriptJavaScript
at

If you want to prioritise language familiarity, JavaScript is more like Java than the other choices; and it can be optimised to run very fast. However if you need really fast cold-start times, you can't beat Go since it's compiled. There are other things to consider, such as the massive amount of community packages and help/documentation in the JavaScript ecosystem. Go is newer but seems to be quite popular if you need something that runs fast in a single binary.

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Paul Whittemore
Developer and Owner at Appurist Software · | 1 upvotes · 398.6K views
Recommends
on
GolangGolang

I was initially going to suggest JavaScript due to the smaller size needs of AWS Lambdas code and the larger range of libraries and community available (and to avoid Python for this). But I have to agree with the recommendations and rationale of @ayildirim above and I think you should choose any reasonable language that is low-overhead, fast startup, and best supported by AWS Lambda, and that is probably Go. I don't think you are likely to go wrong with that, while you can potentially with the others.

So I'd agree, on the strength of AWS Lambda support and the solid performance of Go, it seems like your best choice here for Lambdas (and I'm going to need to consider that myself going forward... pardon the pun).

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Decisions about Flask and JavaScript

server side

Our ML model will be trained locally first. After the local stage, the model will be deployed in the cloud using Flask and Amazon EC2. The data will be stored using MongoDB, and we will use MongoDB Atlas to host it remotely. Below are the reasons why we choose above stacks:

MongoDB and MongoDB Atlas

  • Schema-less (Easy to add/remove attributes)
  • It is easy to set up and run in Amazon EC2

Flask:

  • python library support
  • easy and simple to use

Amazon EC2:

  • Easy to use/configure
  • Secure

Client side

JavaScript will be our main language for front-end. We will use React to build our web interfaces. Material-UI will be used for designing the theme, because it has lots of pre-defined themes. Redis is a great tool for caching due to its in-memory data structure, it can be used to improve user experience. In terms of visualizing data, we use Chart.js. Because it is light weight and easy to learn.

Project management

We use Slack for communication, because it is efficient, light weight and easy to use. GitHub will be used as our primary version control, issue tracking, and roadmapping tool. Because it provides a all-in-one place for code writing and progress tracking.

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A major part of our project includes visualizing the data through graphs and charts. We chose to use d3.js since it provides a wide selection of well-designed graphics and animations. As a library, it is also easy to use and be included in our UI. JavaScript which our team has experience with was also selected to integrate graphics from d3.js into the UI, as well as to integrate the UI with the backend system. Along with JavaScript, HTML5 and CSS 3 are also selected mostly for styling and formatting the webpage. These three languages are widely used which means that more support will be available, making the implementation process easier.

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Labib Chowdhury
Student at University of Toronto · | 5 upvotes · 109K views

The key to our product relies on explainability and user experience when using our product. With this is mind, it is important to build a clean, readable web interface that a user will be able to navigate easily and quickly debug their security issues. The stack chosen for the interface of our product includes: JavaScript + React, CSS, HTML, Material UI and D3.js.

React provides us with simplicity to allow us to deliver the MVP as soon as possible. React also has multiple open source libraries to ease our development. Being able to reuse React components will help in developing the product fast as well as making the user interface modular. Since we're using React, we will also be using JavaScript, HTML, and CSS to create the frontend.

To design the UI, using a minimal approach would be the best solution. The Material UI library provides us with minimal and aesthetically pleasing React Components which would make our frontend look pleasing to the user.

Finally, our UI will consist of displaying information from our Machine Learning model in a dashboard type view. To display data in tasteful manner, we have chosen to use the D3.js library. This library is the most popular data visualization library for React with over 80k stars on Github. D3 also provides seamless compatibility with React and has a variety of features which would make the data we produce visually pleasing.

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Backend:

Python is a great industry standard language that can easily handle both machine learning and web development tasks. Our dev team is very familiar with the language and has used it in various web and Machine learning projects. Python has many versatile ML specific libraries that include TensorFlow, Pytorch, Pycaret, and Keras. It also has packages for data manipulations and visualization like Numpy, Pandas, and Matplotlib. Since our software requires machine learning algorithms, big data processing and a backend server, Python seemed like the way to go.

Our team decided to go distributed databases (NoSQL) over a relational database (SQL) because of the NoSQL dynamic schemas for unstructured data. We are using MongoDB as our NoSQL database due to its simplicity, schema less documentation, deep/fast querying ability, user data management, big data, JSON style documents, and great scaling out. We also chose MongoDB due to its horizontal scaling as a NoSQL database.

Since we are using python as our backend programming language, we decided to use Flask as our web framework. Flask is a micro and lightweight web framework that provides the required functionality to efficiently develop our web server. Flask has a great community with many online resources and provides more flexibility in terms of customization when compared to other frameworks like Django. While Django is great for large scale applications, it does not work well with NoSQL databases.

Frontend:

For our front end framework, we decided to go with React due to its component based structures, flexibility, scalability, and high performance. React has a strong community and is trusted by top companies such as Facebook, Netflix, and Paypal. We can also easily transition our react app to a react native or electron app. We will also be using material-ui framework alongside react for that crisp google material design!

Node.js will be used for development purposes for the front end only. Once we deploy for production, the react frontend will be served from the flask web server and will not require Node.js. This separates the frontend and backend during development, making it easier to work with.

Javascript is one of the most widely used languages for front end development and we will be using it alongside React to develop our user interface. Our dev team is familiar with it through previous web projects. Given how popular it is, its community is very active for any problems that come up and is easy to hire for in the future.

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Nathan De Pachtere
Fullstack Developer at Alpsify · | 8 upvotes · 90.6K views
Shared insights
on
CSS 3CSS 3HTML5HTML5JavaScriptJavaScript
at

Am I the only one to think that libraries like Bootstrap, Vuetify, Materialize, Foundation are too much sometimes ?

Most of the time you are loading all the library and using 10% of it. And on that 10% you are modifying 90% of it.

I feel like using grid and pure CSS / JS are enough and cleaner.

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Lucas Litton
Founder & CEO at Macombey · | 8 upvotes · 251.7K views

JavaScript is at the forefront of our entire development approach. Not only do we use different JavaScript frameworks and management tools, but we also use pure vanilla JavaScript to solve simple problems throughout all of our client's builds. JavaScript is a general purpose programming language that can be blazing fast and fun to work with. There's not one project we are working on that doesn't involve it.

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William Artero
Senior Platform Engineer at ABN AMRO · | 6 upvotes · 374.4K views

Telegram Messenger has frameworks for most known languages, which makes easier for anyone to integrate with them. I started with Golang and soon found that those frameworks are not up to date, not to mention my experience testing on Golang is also mixed due to how their testing tool works. The natural runner-up was JS, which I'm ditching in favor of TS to make a strongly typed code, proper tests and documentation for broader usage. TypeScript allows fast prototyping and can prevent problems during code phase, given that your IDE of choice has support for a language server, and build phase. Pairing it with lint tools also allows honing code before it even hits the repositories.

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Andrew Carpenter
Chief Software Architect at Xelex Digital, LLC · | 16 upvotes · 407.3K views

In 2015 as Xelex Digital was paving a new technology path, moving from ASP.NET web services and web applications, we knew that we wanted to move to a more modular decoupled base of applications centered around REST APIs.

To that end we spent several months studying API design patterns and decided to use our own adaptation of CRUD, specifically a SCRUD pattern that elevates query params to a more central role via the Search action.

Once we nailed down the API design pattern it was time to decide what language(s) our new APIs would be built upon. Our team has always been driven by the right tool for the job rather than what we know best. That said, in balancing practicality we chose to focus on 3 options that our team had deep experience with and knew the pros and cons of.

For us it came down to C#, JavaScript, and Ruby. At the time we owned our infrastructure, racks in cages, that were all loaded with Windows. We were also at a point that we were using that infrastructure to it's fullest and could not afford additional servers running Linux. That's a long way of saying we decided against Ruby as it doesn't play nice on Windows.

That left us with two options. We went a very unconventional route for deciding between the two. We built MVP APIs on both. The interfaces were identical and interchangeable. What we found was easily quantifiable differences.

We were able to iterate on our Node based APIs much more rapidly than we were our C# APIs. For us this was owed to the community coupled with the extremely dynamic nature of JS. There were tradeoffs we considered, latency was (acceptably) higher on requests to our Node APIs. No strong types to protect us from ourselves, but we've rarely found that to be an issue.

As such we decided to commit resources to our Node APIs and push it out as the core brain of our new system. We haven't looked back since. It has consistently met our needs, scaling with us, getting better with time as continually pour into and expand our capabilities.

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Aleksandr Filatov
Contract Software Engineer - Microsoft · | 3 upvotes · 206.1K views
How to make your JS code faster just adding some parenthesis?

Optimize-js I will not describe this tool a lot here, because it's already good done by author on github

I just want to mention that this tool wrap up all immediately-invoked functions or likely-to-be-invoked functions in parentheses what is do a great optimization a JavaScript file for faster initial execution and parsing (based on my experience).

The performance of application where I've introduced optimize-js improved on 20% in a common (tested in Chrome and IE11).

Why it happens?

Is it maintaining now? - Unfortunately, no (but feel free to send PR)

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Mike Fiedler
Enterprise Architect at Warby Parker · | 3 upvotes · 224.4K views

When I was evaluating languages to write this app in, I considered either Python or JavaScript at the time. I find Ruby very pleasant to read and write, and the Ruby community has built out a wide variety of test tools and approaches, helping e deliver better software faster. Along with Rails, and the Ruby-first Heroku support, this was an easy decision.

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Pros of Flask
Pros of JavaScript
  • 14
    Flexibilty
  • 10
    For it flexibility
  • 9
    Flexibilty and easy to use
  • 8
    Flask
  • 7
    User friendly
  • 6
    Secured
  • 5
    Unopinionated
  • 3
    Orm
  • 2
    Secure
  • 1
    Beautiful code
  • 1
    Easy to get started
  • 1
    Easy to develop and maintain applications
  • 1
    Not JS
  • 1
    Easy to use
  • 1
    Documentation
  • 1
    Python
  • 1
    Minimal
  • 1
    Lightweight
  • 1
    Easy to setup and get it going
  • 1
    Perfect for small to large projects with superb docs.
  • 1
    Easy to integrate
  • 1
    Speed
  • 1
    Get started quickly
  • 1
    Customizable
  • 1
    Simple to use
  • 1
    Powerful
  • 1
    Rapid development
  • 0
    Open source
  • 0
    Well designed
  • 0
    Productive
  • 0
    Awesome
  • 0
    Expressive
  • 0
    Love it
  • 1.7K
    Can be used on frontend/backend
  • 1.5K
    It's everywhere
  • 1.2K
    Lots of great frameworks
  • 897
    Fast
  • 745
    Light weight
  • 425
    Flexible
  • 392
    You can't get a device today that doesn't run js
  • 286
    Non-blocking i/o
  • 237
    Ubiquitousness
  • 191
    Expressive
  • 55
    Extended functionality to web pages
  • 49
    Relatively easy language
  • 46
    Executed on the client side
  • 30
    Relatively fast to the end user
  • 25
    Pure Javascript
  • 21
    Functional programming
  • 15
    Async
  • 13
    Full-stack
  • 12
    Setup is easy
  • 12
    Future Language of The Web
  • 12
    Its everywhere
  • 11
    Because I love functions
  • 11
    JavaScript is the New PHP
  • 10
    Like it or not, JS is part of the web standard
  • 9
    Expansive community
  • 9
    Everyone use it
  • 9
    Can be used in backend, frontend and DB
  • 9
    Easy
  • 8
    Most Popular Language in the World
  • 8
    Powerful
  • 8
    Can be used both as frontend and backend as well
  • 8
    For the good parts
  • 8
    No need to use PHP
  • 8
    Easy to hire developers
  • 7
    Agile, packages simple to use
  • 7
    Love-hate relationship
  • 7
    Photoshop has 3 JS runtimes built in
  • 7
    Evolution of C
  • 7
    It's fun
  • 7
    Hard not to use
  • 7
    Versitile
  • 7
    Its fun and fast
  • 7
    Nice
  • 7
    Popularized Class-Less Architecture & Lambdas
  • 7
    Supports lambdas and closures
  • 6
    It let's me use Babel & Typescript
  • 6
    Can be used on frontend/backend/Mobile/create PRO Ui
  • 6
    1.6K Can be used on frontend/backend
  • 6
    Client side JS uses the visitors CPU to save Server Res
  • 6
    Easy to make something
  • 5
    Clojurescript
  • 5
    Promise relationship
  • 5
    Stockholm Syndrome
  • 5
    Function expressions are useful for callbacks
  • 5
    Scope manipulation
  • 5
    Everywhere
  • 5
    Client processing
  • 5
    What to add
  • 4
    Because it is so simple and lightweight
  • 4
    Only Programming language on browser
  • 1
    Test
  • 1
    Hard to learn
  • 1
    Test2
  • 1
    Not the best
  • 1
    Easy to understand
  • 1
    Subskill #4
  • 1
    Easy to learn
  • 0
    Hard 彤

Sign up to add or upvote prosMake informed product decisions

Cons of Flask
Cons of JavaScript
  • 10
    Not JS
  • 7
    Context
  • 5
    Not fast
  • 1
    Don't has many module as in spring
  • 22
    A constant moving target, too much churn
  • 20
    Horribly inconsistent
  • 15
    Javascript is the New PHP
  • 9
    No ability to monitor memory utilitization
  • 8
    Shows Zero output in case of ANY error
  • 7
    Thinks strange results are better than errors
  • 6
    Can be ugly
  • 3
    No GitHub
  • 2
    Slow

Sign up to add or upvote consMake informed product decisions

What is Flask?

Flask is intended for getting started very quickly and was developed with best intentions in mind.

What is JavaScript?

JavaScript is most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic,and supports object-oriented, imperative, and functional programming styles.

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What are some alternatives to Flask and JavaScript?
Django
Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.
Tornado
By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived connection to each user.
ExpressJS
Express is a minimal and flexible node.js web application framework, providing a robust set of features for building single and multi-page, and hybrid web applications.
Node.js
Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.
React
Lots of people use React as the V in MVC. Since React makes no assumptions about the rest of your technology stack, it's easy to try it out on a small feature in an existing project.
See all alternatives