Earlier this year, we released Lightning Web Components (LWC), a new UI framework based on web standards and optimized for performance and developer productivity. We have now open sourced the Lightning Web Components framework so that anyone can build applications on any platform. Join our webinar where we'll explore how this framework, based on standard HTML, modern JavaScript (ES6+), and the best of native Web Components, helps you create web components and apps using the stack and tools you prefer.

1. Enterprise-grade UI with
Open Source Lightning Web Components
July 18, 2019 | 10:30 a.m. IST
Satya Sekhar
Sr. Developer Evangelist
Salesforce
Aditya Naag Topalli
Sr. Developer Evangelist
Salesforce

2. Forward-Looking Statement
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3. Go Social!
Salesforce Developers
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The video will be posted to YouTube & the
webinar recap page (same URL as registration).
This webinar is being recorded!
@salesforcedevs

4. Have Questions?
● Don’t wait until the end to ask your question!
● Technical support will answer questions starting now.
● Respect Q&A etiquette
● Please don’t repeat questions. The support team is working their way down
the queue.
● Stick around for live Q&A at the end
● Speakers will tackle more questions at the end, time-allowing
● Head to Developer Forums
● More questions? Visit developer.salesforce.com/forums

5. Agenda
● What's new in Web Standards
● What, Why and How of the Lightning Web Component Framework
● Exciting Demos

6. The World of Web Development has Changed
2014 2019
+

7. What are web components?
● Custom elements
● Define your own custom HTML tags like <hello-world>
● Shadow DOM
● Create scoped sub-trees in DOM
● Used for encapsulation
● HTML templates
● The elements <template> and <slot> allow you to create reusable
markup for custom elements.
● HTML Templates are rendered at runtime by JavaScript.
Allow you to create new custom, reusable, encapsulated HTML tags

8. Benefits of web components
Reusability
Interoperability
Encapsulation
Extensibility
Composability

9. Standards: Modules
● Each module is a piece of code that is executed once a JavaScript file is loaded.
● import and export statements are used to use and create modules
ECMAScript 6 +

10. Standards: Decorators
● Extending the behavior of a function without explicitly modifying it.
● You apply it by prefixing the decorator with an `@` character and placing this at
the very top of what you are trying to decorate.
ECMAScript 6 + (proposed for standardization)

11. Demo

12. Built with Modern Web Standards
Use the modern language of the web: ES6+, Custom Elements,
Modules, and Templates
Built for performance
More code executed by the browser instead of JavaScript abstractions
for a blazing fast experience
Compatible and easy to use
Compatible with IE 11 (required polyfills are added)
Backward compatibility
Introducing Lightning Web Components
Build modern apps on a standards-based JavaScript framework
Web Components
Templates
Custom Elements
Shadow DOM
Modules
ECMAScript 6+
Events
Standard Elements
Rendering
Lightning Web Components Framework
Salesforce Bindings
Salesforce Components

13. Lightning Web Components Framework NOW OPEN
SOURCE
Use the same framework on and off the Lightning
Platform
Learn by exploring the source code
Drive the roadmap by contributing code Lightning Base Components
Salesforce Bindings
Build Anywhere with
Lightning Web Components Open Source

14. BUILD TEST QUALITY DEPLOYFRAMEWORK
Leverage the Broader Open Source Community
Developers learn one framework that works anywhere with their preferred tools

15. Open Source is Part of the Salesforce Story
Salesforce is committed to open source and advancing web standards
Lightning Web
Components
https://opensource.salesforce.com/

16. Demo

17. Get Started with LWC Open Source Today!
Learn more about building with web standards through these useful resources
recipes.lwc.dev
lwc.dev
Explore more at lwc.dev
Dive into the source code and documentation to understand and iterate on
the framework
Check out code samples at recipes.lwc.dev
Visit this page to see code samples to build on the framework

18. Q & A
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Join the conversation: @salesforcedevs
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