<i>Svelte and Sapper in Action</i>&nbsp;is a comprehensive guide to building web apps with Svelte and Sapper. You&#8217;ll dive straight into coding a complete travel packing app as you learn to write, compile, and organize Svelte components for your app&#8217;s UI. From there, you&#8217;ll master Svelte&#8217;s awesome state management model and learn to use Sapper for simplified page routing, creating static sites, and providing offline support with Service Workers. By the time you&#8217;re done, you&#8217;ll be able to build web applications that are easier to understand, offer great UX, and don&#8217;t compromise on SEO.

<p>For front-end web developers familiar with the basics of HTML, CSS, and JavaScript.</p><p>&nbsp;</p><p><i>Svelte and Sapper in Action</i>&nbsp;is a comprehensive guide to building web apps with Svelte and Sapper. You&#8217;ll dive straight into coding a complete travel packing app as you learn to write, compile, and organize Svelte components for your app&#8217;s UI. From there, you&#8217;ll master Svelte&#8217;s awesome state management model and learn to use Sapper for simplified page routing, creating static sites, and providing offline support with Service Workers. By the time you&#8217;re done, you&#8217;ll be able to build web applications that are easier to understand, offer great UX, and don&#8217;t compromise on SEO.</p><p>&nbsp;</p><ul> <li>Creating Svelte applications and components  </li><li>Communicating between Svelte components  </li><li>Routing between pages in both Svelte and Sapper  </li><li>Adding animation to components  </li><li>Debugging, testing, and deploying applications  </li><li>Implementing and invoking REST services in a Sapper app  </li><li>Exporting a Sapper app as a static site</li></ul><p>Imagine web apps with fast browser load times that also offer amazing developer productivity and require less code to create. That&#8217;s what Svelte and Sapper deliver! Svelte pushes a lot of the work a frontend framework would handle to the compile step, so your app components come out as tight, well-organized JavaScript modules. Sapper is a lightweight web framework that minimizes application size through server-rendering front pages and only loading the JavaScript you need. The end result is more efficient apps with great UX and simplified state management.</p><p>&nbsp;</p><p>Rather than loading a framework like Angular, Vue, or React into the browser, Svelte compiles your components into tiny, well-organized JavaScript modules. That means your app loads lightning fast and runs even faster, in part because there&#8217;s no need to load &#8220;just-in-case&#8221; framework code. Svelte also streamlines your UI development with a host of powerful features such as reactive statements, two-way data binding, stores, and context. The Sapper framework pairs perfectly with Svelte for efficient server-side rendering, code splitting, and API development.</p>

R Mark Volkmann

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