更新时间：2021-06-24 12:27:23
coverpage
Title Page
Copyright and Credits
Learn TypeScript 3 by Building Web Applications
Dedication
About Packt
Why subscribe?
Foreword
Contributors
About the authors
About the reviewers
Packt is searching for authors like you
Preface
Who this book is for
What this book covers
To get the most out of this book
Download the example code files
Download the color images
Conventions used
Get in touch
Reviews
Introduction to TypeScript
TypeScript in a few words
JavaScript
JavaScript's history in a nutshell
ECMAScript
ECMAScript evolution and support
JavaScript gotchas
How can TypeScript help?
Enhanced JavaScript
Future JavaScript today
Static typing
Structural typing
Types for JavaScript libraries
.NET and Java developers will feel at home
What you'll need to install
Text editor
Version control system
Shell
JavaScript runtime
Package manager
TypeScript
Installing VS Code
Windows
Windows (shell)
Linux (GUI)
Linux (shell)
Extensions
Installing and configuring Git
Configuring git
Downloading the book samples
Installing Node.js and npm
Git BASH
Updating npm
Linux
Installing TypeScript
Hello world with TypeScript
Creating the project
Hello (Type/Java)Script!
Compiling manually using the TypeScript compiler
Variables declaration
Basic TypeScript types
A tiny bit of type safety can't hurt
Summary
Further reading about ECMAScript
Building TodoIt - Your Own Web Application with TypeScript
What will you build?
Creating the project using npm
Introducing npm
package.json
Installing dependencies with npm
Installing dependencies with npm and package.json
The node_modules folder content
Updating dependencies with npm
package-lock.json
Defining and executing npm scripts
When not to install packages globally
Adding TypeScript to the project
Configuring the TypeScript compiler
Creating the TodoIt application
Opening the project in VS Code
Defining the basic application structure
Leveraging VS Code support for TypeScript
Building from the Terminal
Using Browsersync to refresh automatically
Implementing the user interface
Loading the TodoIt code and checking the browser console
Creating the todo list with TypeScript arrays
Getting hold of inputs and casting using the as operator
Adding todo items to the list
Listing existing todo items using lambda expressions
Listing existing todo items using loops
Filtering existing todo items using the ES2015 TypeScript support
Removing a single todo item
Debugging your code in the web browser
