Book Image

Blazor WebAssembly by Example, 2e - Second Edition

By : Toi B. Wright
5 (1)
Book Image

Blazor WebAssembly by Example, 2e - Second Edition

5 (1)
By: Toi B. Wright

Overview of this book

Blazor WebAssembly helps developers build web applications without the need for JavaScript, plugins, or add-ons. With its continued growth in popularity, getting started with Blazor now can open doors to new career paths and exciting projects – and Blazor WebAssembly by Example will make your first steps easier. This is a project-based guide that will teach you how to build single-page web applications with Blazor, focusing heavily on the practical over the theoretical by providing detailed step-by-step instructions for each project. The author also includes a video for each project showing her following the step-by-step instructions, so readers can use them if they're unsure about any particular step. In this updated edition, you'll start by building simple standalone web applications and gradually progress to developing more advanced hosted web applications with SQL Server backends. Each project will cover a different aspect of the Blazor WebAssembly ecosystem, such as Razor components, JavaScript interop, security, event handling, debugging on the client, application state, and dependency injection. The book’s projects get more challenging as you progress, but you don’t have to complete them in order, which makes this book a valuable resource for beginners as well as those who just want to dip into specific topics. By the end of this book, you will have experience and lots of know-how on how to build a wide variety of single-page web applications with .NET, Blazor WebAssembly, and C#.
Table of Contents (15 chapters)
13
Other Books You May Enjoy
14
Index

Using Local Storage

The Web Storage API for JavaScript provides mechanisms for browsers to store key/value pairs. For each web browser, the size of data that can be stored in web storage is at least 5 MB per origin. The localStorage mechanism is defined in the Web Storage API for JavaScript. We need to use JS interop to access the application’s Local Storage because the Web Storage API requires the use of JavaScript.

The application’s Local Storage is scoped to a particular URL. If the user reloads the page or closes and re-opens the browser, the contents of Local Storage are retained. If the user Local Storage multiple tabs, each tab shares the same Local Storage. The data in Local Storage is retained until it is explicitly cleared since it does not have an expiration date.

IMPORTANT NOTE

Data in a localStorage object that is created when using an InPrivate window or Incognito window is cleared when the last tab is closed.

These are the methods of localStorage:

  • key...