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Hands-On JavaScript High Performance

You're reading from   Hands-On JavaScript High Performance Build faster web apps using Node.js, Svelte.js, and WebAssembly

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Product type Paperback
Published in Feb 2020
Publisher Packt
ISBN-13 9781838821098
Length 376 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Justin Scherer Justin Scherer
Author Profile Icon Justin Scherer
Justin Scherer
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Toc

Table of Contents (15) Chapters Close

Preface 1. Tools for High Performance on the Web 2. Immutability versus Mutability - The Balance between Safety and Speed FREE CHAPTER 3. Vanilla Land - Looking at the Modern Web 4. Practical Example - A Look at Svelte and Being Vanilla 5. Switching Contexts - No DOM, Different Vanilla 6. Message Passing - Learning about the Different Types 7. Streams - Understanding Streams and Non-Blocking I/O 8. Data Formats - Looking at Different Data Types Other Than JSON 9. Practical Example - Building a Static Server 10. Workers - Learning about Dedicated and Shared Workers 11. Service Workers - Caching and Making Things Faster 12. Building and Deploying a Full Web Application 13. WebAssembly - A Brief Look into Native Code on the Web 14. Other Books You May Enjoy

Build the basics – a Todo application

To start off our Todo application, let's go ahead and utilize the template that we already have. Now, in most Todo applications, we want to be able to do the following things:

  • Add
  • Remove/mark complete
  • Update

So what we have is a basic CRUD application without any server operations. Let's go ahead and write the Svelte HTML that we would expect for this application:

<script>
import { createEventDispatcher } from 'svelte';
export let completed;
export let num;
export let description;

const dispatch = createEventDispatcher();
</script>
<style>
.completed {
text-decoration: line-through;
}
</style>
<li class:completed>
Task {num}: {description}
<input type="checkbox" bind:checked={completed} />
<button on:click="{() => dispatch...
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