Lightning Web Components are custom HTML elements built using HTML and JavaScript. This document discusses the fundamentals of Lightning Web Components including their structure, templating, lifecycle hooks, communication between components, and provides a recipe for building a basic to-do list app as an example. The recipe demonstrates creating the necessary SFDX project and components, defining the component templates and logic, and adding the main application component to display the to-do form.
Lightning web components are custom HTML elements built using HTML and modern JavaScript. Lightning Web Components uses core Web Components standards and provides only what’s necessary to perform well in browsers supported by Salesforce.
Introduction to Lightning Web Component SmritiSharan1
Introduction to lightning web component
What is lightning web component?
Difference between aura component and LWC
Why do you go for LWC instead of existing aura components?
Coexistence and interoperability of aura and LWC
Intro to Salesforce Lightning Web Components (LWC)Roy Gilad
Overview and background for Salesforce Lightning Web Components (LWC).
Source code in the sample gallery: https://github.com/trailheadapps/lwc-recipes
Presented by Roy Gilad, on January 29, 2019.
Lightning Web Components are a JavaScript programming model for building web applications and interfaces that is built on the best of web standards.
Any front-end web developer can get started with LWC and leverage custom elements, and JavaScript APIs to create modern apps and experiences that are fully aware of Salesforce data and processes.
Lightning web components are custom HTML elements built using HTML and modern JavaScript. Lightning Web Components uses core Web Components standards and provides only what’s necessary to perform well in browsers supported by Salesforce.
Introduction to Lightning Web Component SmritiSharan1
Introduction to lightning web component
What is lightning web component?
Difference between aura component and LWC
Why do you go for LWC instead of existing aura components?
Coexistence and interoperability of aura and LWC
Intro to Salesforce Lightning Web Components (LWC)Roy Gilad
Overview and background for Salesforce Lightning Web Components (LWC).
Source code in the sample gallery: https://github.com/trailheadapps/lwc-recipes
Presented by Roy Gilad, on January 29, 2019.
Lightning Web Components are a JavaScript programming model for building web applications and interfaces that is built on the best of web standards.
Any front-end web developer can get started with LWC and leverage custom elements, and JavaScript APIs to create modern apps and experiences that are fully aware of Salesforce data and processes.
Getting Started with Lightning Web Components | LWC | SalesforceRahul Malhotra
This presentation is used in the first tutorial in Lightning Web Components Tutorial Series by SFDC Stop. Have a look at the full playlist here:- https://www.youtube.com/playlist?list=PLuL63vr-9xHyaEARj8crQe3v2TBQa_Cs8
Introduction to Lightning Web Components (LWC)
Why Lightning Web Component (LWC)
Part 1 - Vanilla HTML5 Web Components
Benefits of Web Component
Pillars of Web Component
Demo of Custom Element and Templating
Part 2 - Lightning Web Component
Hello World
Demo of Lifecycle methods
Call Apex Class
Access Custom Label
Lightning Data Services
Communication between Lightning Component and LWC
Third party Callout from LWC
Lightning Web Components give any JavaScript developer a modern, web standards-based path to building apps and experiences on the Lightning Platform.
In the second episode of our five part webinar series on Lightning Web Components, we will show you how to access data from the Salesforce org, get record data, create records and handle errors using Lightning Web Components. In this webinar you’ll learn all about Lightning Data Service, reactive wire service and Lightning App Builder.
LWC Episode 3- Component Communication and Aura InteroperabilitySalesforce Developers
Lightning Web Components gives JavaScript developers a web standards-based path to building apps on the Salesforce Lightning Platform.
In the third episode of our five part series on Lightning Web Components, we cover design considerations and compositions of Lightning Web Components.
Now you can build Lightning components using two programming models: Lightning Web Components, and the original model, Aura Components. Lightning web components are custom HTML elements built using HTML and modern JavaScript. Lightning web components and Aura components can coexist and interoperate on a page. To admins and end users, they both appear as Lightning components.
Lightning Web Components uses core Web Components standards and provides only what’s necessary to perform well in browsers supported by Salesforce. Because it’s built on code that runs natively in browsers, Lightning Web Components is lightweight and delivers exceptional performance. Most of the code you write is standard JavaScript and HTML.
Introducing Lightning Component Architecture, Component Driven Development Approach and their benefits. Places where Lightning Components can run, Tools used for Lightning Component Development & Debugging
In the fourth episode of our five part series on Lightning Web Components, we show you how static resources and custom JavaScript are used with Lightning Web Components. You’ll learn how to use external APIs in conjunction with Lightning Locker to secure your JavaScript code. And finally, we’ll demonstrate how you can test your Lightning Web Components using Jest.
From Sandbox To Production: An Introduction to Salesforce Release ManagementSalesforce Developers
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When building an enterprise solution or creating an app, data often comes from multiple systems, and business processes frequently cross application boundaries.
Salesforce offers a rich library of programmatic and point-and-click integration tools to customize business processes that span multiple application systems. In this webinar, we will survey the many integration options and technologies available in Salesforce, including newer API and integration features.
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Learn about the newly released Lightning Web Components! LWC is a new programming model for building Lightning components. It leverages the web standards breakthroughs of the last five years, delivers unparalleled performance, and coexists and interoperates with all of your existing Lightning components.
Getting Started with Lightning Web Components | LWC | SalesforceRahul Malhotra
This presentation is used in the first tutorial in Lightning Web Components Tutorial Series by SFDC Stop. Have a look at the full playlist here:- https://www.youtube.com/playlist?list=PLuL63vr-9xHyaEARj8crQe3v2TBQa_Cs8
Introduction to Lightning Web Components (LWC)
Why Lightning Web Component (LWC)
Part 1 - Vanilla HTML5 Web Components
Benefits of Web Component
Pillars of Web Component
Demo of Custom Element and Templating
Part 2 - Lightning Web Component
Hello World
Demo of Lifecycle methods
Call Apex Class
Access Custom Label
Lightning Data Services
Communication between Lightning Component and LWC
Third party Callout from LWC
Lightning Web Components give any JavaScript developer a modern, web standards-based path to building apps and experiences on the Lightning Platform.
In the second episode of our five part webinar series on Lightning Web Components, we will show you how to access data from the Salesforce org, get record data, create records and handle errors using Lightning Web Components. In this webinar you’ll learn all about Lightning Data Service, reactive wire service and Lightning App Builder.
LWC Episode 3- Component Communication and Aura InteroperabilitySalesforce Developers
Lightning Web Components gives JavaScript developers a web standards-based path to building apps on the Salesforce Lightning Platform.
In the third episode of our five part series on Lightning Web Components, we cover design considerations and compositions of Lightning Web Components.
Now you can build Lightning components using two programming models: Lightning Web Components, and the original model, Aura Components. Lightning web components are custom HTML elements built using HTML and modern JavaScript. Lightning web components and Aura components can coexist and interoperate on a page. To admins and end users, they both appear as Lightning components.
Lightning Web Components uses core Web Components standards and provides only what’s necessary to perform well in browsers supported by Salesforce. Because it’s built on code that runs natively in browsers, Lightning Web Components is lightweight and delivers exceptional performance. Most of the code you write is standard JavaScript and HTML.
Introducing Lightning Component Architecture, Component Driven Development Approach and their benefits. Places where Lightning Components can run, Tools used for Lightning Component Development & Debugging
In the fourth episode of our five part series on Lightning Web Components, we show you how static resources and custom JavaScript are used with Lightning Web Components. You’ll learn how to use external APIs in conjunction with Lightning Locker to secure your JavaScript code. And finally, we’ll demonstrate how you can test your Lightning Web Components using Jest.
From Sandbox To Production: An Introduction to Salesforce Release ManagementSalesforce Developers
Wondering how to manage multiple Salesforce environments for managing your release? Join us as our Architects show how large enterprises manage Sandbox environments. Learn some of the key considerations in picking sandbox types and migration tools to lay out a process to manage an effective Release Management.
When building an enterprise solution or creating an app, data often comes from multiple systems, and business processes frequently cross application boundaries.
Salesforce offers a rich library of programmatic and point-and-click integration tools to customize business processes that span multiple application systems. In this webinar, we will survey the many integration options and technologies available in Salesforce, including newer API and integration features.
This webinar is the first in a series that will explore several ways to integrate systems and services with Salesforce.
Did you inherit a cluttered org with no documentation? Are you trying to figure out why you have 500 fields on an object? Join this session and collaboratively learn from other customers about the most common traits of a messy implementation, and how you can untangle yours.
Websites and applications are implementing social single sign-on to allow users to login using trusted authentication providers such as Google, Facebook, and even Salesforce. Join us to learn how to configure the OpenID Connect authentication provider to allow users to authenticate at Google to access a Salesforce environment. We'll also look at how you can relieve yourself of the burden of password management by having your web app login users via Salesforce.
The Salesforce platform offers system as well as application level security capabilities for building robust and secure applications. Join us as we introduce the system-level security features of Salesforce, like authentication and authorization mechanisms that include various Single Sign-On and OAuth flows. We'll also cover declarative application-level security features, like user profiles, roles and permissions, and how an Organization Wide Security and record-sharing model enforces a finer level of access control over the data.
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Learn about the newly released Lightning Web Components! LWC is a new programming model for building Lightning components. It leverages the web standards breakthroughs of the last five years, delivers unparalleled performance, and coexists and interoperates with all of your existing Lightning components.
This presentation will show the latest Web Components technologies and examples, and whether you should be using Web Components now. (spoiler alert: you should be!)
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https://qrsolutions.in/lightning-web-component/
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As presented to the Milwaukee Alt.Net group on November 21st, 2011.
UPDATE April 19, 2012: added some domain logic organization slides using Fowler's 4 basic patterns.
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Introduction to Lightning Web Components (LWC)
Why Lightning Web Component (LWC)
Part 1 - Vanilla HTML5 Web Components
Benefits of Web Component
Pillars of Web Component
Demo of Custom Element and Templating
Part 2 - Lightning Web Component
Hello World
Demo of Lifecycle methods
Call Apex Class
Access Custom Label
Lightning Data Services
Communication between Lightning Component and LWC
Third party Callout from LWC
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2. Agenda
● What is Lightning Web Component?
● Journey of Web Stack and its evolution
● Fundamentals of Lightning Web Component
● Component LifeCycle Hooks
● Components Inter-Communication
● To-do-list recipe
3. What is Lightning Web Component?
Lightning Web Components are custom HTML elements built using HTML and
javascript.
9. HTML TEMPLATE
The power of Lightning Web Components is the templating system, which uses the virtual DOM to render
components smartly and efficiently.
● A template is valid HTML with a <template> root tag.
● When a component renders, the <template> tag is replaced with the name of the component,
<namespace-component-name>
● Bind properties in a component’s template to properties in the component’s JavaScript class by
surrounding the property with curly braces, {property}
● Render DOM Elements Conditionally with if:true|false directive to a nested <template>
tag that encloses the conditional content.
10. HTML TEMPLATE
The power of Lightning Web Components is the templating system, which uses the virtual DOM to render
components smartly and efficiently.
<!-- helloConditionalRendering.html -->
<template>
<lightning-card title="HelloConditionalRendering" icon-name="custom:custom14">
<div class="slds-m-around_medium">
<lightning-input type="checkbox" label="Show details"
onchange={handleChange}></lightning-input>
<template if:true={areDetailsVisible}>
<div class="slds-m-vertical_medium">
These are the details!
</div>
</template>
</div>
</lightning-card>
</template>
11. Component CSS
● Components can’t share style sheets
● Each component can have only one style sheet
● Salesforce Lightning Design System is a CSS
framework
13. Decorators
@track
➔ Private reactive properties.
➔ Owner component cannot access
these properties
➔ Rerenders the content of the
component if the property changes.
14. Decorators
@wire
➔ Read data using wire adapters in
the lightning/ui*Api
➔ Owner component cannot access
these properties
➔ Rerenders the content of the
component if the property changes.
import getContactList from
'@salesforce/apex/ContactController.
getContactList';
@wire(getContactList)
wiredContacts
15. Component Lifecycle Hooks
Constructor()
Component Instance
Created
connectedCallback()
Component inserted in DOM
renderedCallBack()
Rendering is complete
render()
Component renders
disconnectedCallBack()
Component is removed
errorCallBack
(error, stack)
Captures error in hierarchy
17. Flow Data in component Hierarchy
Parent
Child
@api child1
Child
@api child2
child-property=’Set me’
child-property =’Set me too’
● Child Components must declare Public API with
@api decorator
● Child Component can assign default value to the
public property but it cannot change the value of
the property.
● Only Parent can set the public property.
18. Flow Data in component Hierarchy
Parent
Child1
dispatchEvent
(child1Event)
Child2
dispatchEvent
(child2Event)
Child1Handler
Child2Handler
● Data must be passed up using Events.
● Events are created using the Event or
CustomEvent standard JavaScript classes
● Child components create and dispatch events.
● Parent component handles events dispatched by
child components.
19. Flow Data in component Hierarchy
lwc-brother
lwc-sister
● Use singleton library that follows the publish – subscribe pattern
● Salesforce has published such library - pubsub a service component that follows the
pattern
● This type of communication is also used for talking with Aura Components on the
same level.
aura-cousin
23. Ingredients (Tools)
● One - Salesforce CLI - installed
● One - Visual Studio Code - Installed
● One - Salesforce Extension package - Installed
● One - Development org - with enabled My Domain
in Org and DevHub
25. Preparation (Steps)
1. Create SFDX Project
a. Sfdx force:project:create --projectname toDoForm
b. Select SFDX:Create Project and provide name
1. Create Scratch Org
a. sfdx force:org:create -s -f config/project-scratch-def.json -a "wit"
b. Using VS Code - SFDX:Create a Default Scratch Org Project
1. Create Lightning Web Component
a. sfdx force:lightning:component:create --type lwc -n toDoForm -d force-
app/main/default/lwc
b. Using VS Code - Select SFDX:Create a Lightning Web Component
Project