Infographic | What are Salesforce Lightning Web Components?

Lightning Web Components ( LWCs ) are User Interface (UI) framework and utilized for creating applications with desktop and mobile technologies. This framework acts as a new kind of programming model for the development of Salesforce Lightning components. It is possible to make a single-page web application, providing an end-to-end solution with the help of these components.

Evolution of Lightning Web Components

LWCs make the creation of Lightning components much easier. Lightning Web Components and web components both heavily rely on JavaScript. But the difference lies in LWC using the latest innovations in JavaScript.

Benefits of Lightning Web Components

Builds components for pages at a faster rate with standardized-based architecture.
It has the capability of quick deployment with code reusability.
Builds Lightning pages easily with the standardized architecture.
Implements the components with a few clicks only.
Comes with a web development editor with a rich set of add-ons such as refraction, code completion, easier writing experience with common coding languages of the likes of JavaScript, CSS and HTML.
Creates tailored applications with extension from the user community as well as Salesforce, the latter used for the LWC platform.
Features of LWC and Visualforce can act in combination to build a page consisting of both the functionalities. The Aura apps also support the LWC.
Uses the static code analysis tool, ESLint, for identifying defects in JavaScript code, with warnings with the occurrence of an error.

Differences Between LWC and Lightning Components

Lightning web components are more advanced than the Lightning components as it comes with modern web standards, for a more efficient building process.

Here are some of the differences between the two:

Lightning Components	Lightning Web Components
Developers must have proficiency in the Salesforce platform.	Requires not much familiarity with the Salesforce platform, aligned with the modern web standards.
Uses a standardized JavaScript framework.	Uses standard tools of the likes of CSS, HTML and updated JavaScript (ECMAScript 7).
Not supportive of Unit Testing framework.	Supportive of Unit Testing framework.
Relies heavily on the Aura framework. It is not built on code that runs natively on browsers.	Delivers on the faster performance of applications as it is natively supported in the browsers.
Takes a longer time to build and deliver.	Uses code that runs natively on browsers and results in improved performance and faster deployment.

Some tips on writing LWC code with Service components

Modular reusable code must be written with the increased complexity of your application. Here are some tips for the developer to write the LWC code with service components:

Understand ES2015 standard, the standard JavaScript module feature. The standard allows the developers to use the HTML script tag for importing functionality or using the <import> keyword in another JavaScript module.
Build LWCs by using modules everywhere. The file that is written with JavaScript in the component is an example of a module.
LWC components at the minimum comprise a single JavaScript module along with the metadata XML file. The other files are optional depending upon the functionality that the developer intends to build.