How to integrate web components in Vaadin [closed] - javascript

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I was searching for a ready-to use web component for my Vaadin&Spring Boot application, and faced some questions.
As a person who does not into JS and frontend at all, i'm struggling in integration of those components. Currently I'm interested in this one: https://vaadin.com/directory/component/bluewatertrackspaper-countries/overview. I simply do not know what to do after adding a dependency via Maven. Could someone explain a way how to use those components similarly to default Vaadin components, using java classes?

Unfortunately the webcomponent you linked is built with polymer2. You can't use it in Vaadin 14+, except if you are running it in compatibility mode which I don't recommend.
It's easier to do it in Java with a Combobox.

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Is there way to use Nest JS with Sapper (Svelte)? [closed]

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I've been looking for the past few days, but I haven't found a single sample code or article that discusses how to combine (not separate them as API Service & Frontend Service) Nest JS with Sapper (Svelte). Does anyone have any references in this regard?
I struggled with the same issue and found this template repository on GitHub. I've tested it out and it works pretty well.
The only "downside" is that it uses Svelte instead of Sapper.

Default path of database in a bootstrap website? [closed]

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My Boss just gave me a website of his friend so the developer that build it was fired and i need to access the data base to change things.
The Website is developed using Bootstrap and I never used it Before where do I find the definition of the database connection help please.
Nowhere.
Bootstrap is a collection of CSS and (client-side) JavaScript.
It isn't a traditional, server-side MVC framework (or anything else that would fulfil a similar role) and doesn't do anything that would involve a database.
Bootstrap might be used in the output of a View from such a framework, but that's handled at a different level in the codebase.

which it is the best way to create a desktop windows app with HTML, CSS and JS? [closed]

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I want to start with desktop development, i am student and i have been working on web development, searching i found some tools and frameworks
AppJS
Node-Webkit
Titanium
Sciter
Awesomium
chromiumembedded
And others... I don't know which one I must use, i donĀ“t want to have problems in the future, so I need the better one with great support and functionality.
Thanks!
We use Electron as container for web based multiplatform app
http://electron.atom.io
And the container is that must to have for desktop applications written in html + js + css. Electron is similar to node-webkit (nw) you mentioned.

Node.js server side application starter [closed]

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I am starting a new Android app, and I would like to know what should be the best server-side stack that I could use.
I heard some about MeanIO, MeanJS, Cleverstack, Generator Angular Fullstack.
Which of these suggestions should be the best? Is there another one that is not on the list that would be even more interesting?
If I am correct in saying it depends in what you're doing and trying to focus on. If you wish to also build a web-based front-end it's probably necessary to include AngularJS. If you aren't planning on doing that you could probably cut out the need for Angular.
I imagine the MEAN stack (https://github.com/meanjs/mean) would be enough for your Node.JS server. I doubt you will need to use Angular for an android app so you will be more focused upon the Express+Node+Mongodb portions.

Javascript Python-Postgres [closed]

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I'm building a public database of scientific data.
By now I have a postgres 9.1 database running on a machine, and I've been using psycopg2 to interact from python 2.7.
At the other hand, I'm working on a Boilerplate html interface.
The question is, how to build the interaction between the webpage and the python/postgres database? which library should I use ?
Thanks in advance
What you're looking for is a web framework. Finding the right one is a hard choice and source of lots of discussions. Have a look at this list: http://wiki.python.org/moin/WebFrameworks

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