How to Create Lightning Web Components?

Want to create Salesforce lightning web components? get step-by-step guide and support solution to create lightning web component for your Salesforce. 

Define a Component

A Lightning web component that renders UI must include an HTML file, a JavaScript file, and a metadata configuration file. The files must use the same name so the framework can autowire them. A service component (library) must include a JavaScript file and a metadata configuration file.

HTML Templates

The power of Lightning Web Components is the templating system, which uses the virtual DOM to render components smartly and efficiently. It’s a best practice to let LWC manipulate the DOM instead of writing JavaScript to do it.

CSS

To style components, use Lightning Design System or CSS.

Reactivity

Reactivity is a system at the core of the Lightning Web Components framework. The framework observes changes to the values of fields and properties. When it observes a change, it reacts. It reevaluates all the expressions used in the template and rerenders the component, which displays the new values.

Composition

You can add components within the body of another component. Composition enables you to build complex components from simpler building-block components.

Fields, Properties, and Attributes

Declare fields in your component’s JavaScript class. Reference them in your component’s template to dynamically update content.

JavaScript

Every component must have a JavaScript file. JavaScript files in Lightning web components are ES6 modules.

Access Static Resources, Labels, Internationalization Properties, User IDs, and Form Factors

Lightning components can access global Salesforce values, such as labels, resources, and users.

Component Accessibility

Accessible software and assistive technologies enable users with disabilities to use the products you build. Develop your components so that all users can perceive, understand, navigate, and interact with them.

Component Lifecycle

Lightning web components have a lifecycle managed by the framework. The framework creates components, inserts them into the DOM, renders them, and removes them from the DOM. It also monitors components for property changes. Generally, components don’t need to call these lifecycle hooks, but it is possible.

Content Source: https://developer.salesforce.com/docs/component-library/documentation/en/lwc/lwc.create_components_introduction

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