Is LWC difficult to learn?

To be entirely honest, LWC's are more challenging to create for developers that are not already familiar with modern web development. I hope this post helps anyone not sure about which technology to approach first.

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Is LWC easy to learn?

LWC is a new programming model levering the recent web standards. Rather than being a totally custom and development wise rigid framework, It's quite flexible. (Any web developer working on modern JS frameworks could easily ramp-up LWC). What is shadow DOM in LWC? Shadow DOM is a standard that encapsulates the internal document object model (DOM) structure of a web component. Since not all browsers that Salesforce supports implement Shadow DOM, LWC uses a shadow DOM polyfill. A polyfill is code that allows a feature to work in a web browser.

Then, why do we need lwc?

Enhanced Security and Browser Compatibility ? LWC has built-in security features. Also, it has limited event scope and more CSS, Script, and DOM isolation that offers better security and browser compatibility of the apps. Also, what is lightning component? The Lightning Component framework is a UI framework for developing web apps for mobile and desktop devices. It's a modern framework for building single-page applications with dynamic, responsive user interfaces for Lightning Platform apps. It uses JavaScript on the client side and Apex on the server side.

What is visualforce in Salesforce?

Visualforce is a component-based user interface (UI) framework that enables the creation of dynamic, reusable interfaces. The Visualforce framework is part of Salesforce's Force.com Platform as a Service (PaaS) offering, which is designed to simplify the development and deployment of cloud applications and websites.