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Most of the modern Java Script Frameworks out there are providing similar functionality, but the big difference with web components is that you have native browser support.

So you don’t need to load extra code into your application to be able to use them.

While defining a constructor, there are a few rules we need to follow: When an element is added to the DOM, the connected Callback method is triggered.

From that moment we can be sure that its available in the DOM and we’re able to safely set attributes, fetch resources, run setup code or render templates.

Custom Element Reactions are called with special care in order to prevent user’s code from being executed in the middle of a delicate process.

They’re delayed to the point that all necessary steps are being executed and therefore look to be executed synchronously.

Java Script is a functional programming language where everything is a function and the constructor is no exception, but its a bit different from other functions, because its used for creating and intializing ES6 classes and is called when an instance of an element is upgraded (when it’s created or a previously-created one becomes method).

We’re going to discuss the state of Web Components, help unravel best practices, reveal hidden tips and tricks and make sure that you get a real grasp on the workings of Web Components.

We’ve often had to maintain components that started out simple but grew into an unmanageable mess of stateful logic and side effects.

Each lifecycle method often contains a mix of unrelated logic.

If you look at a typical React application in React Dev Tools, you will likely find a “wrapper hell” of components surrounded by layers of providers, consumers, higher-order components, render props, and other abstractions.

While we could filter them out in Dev Tools, this points to a deeper underlying problem: React needs a better primitive for sharing stateful logic.

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