Programming
Reader small image

You're reading from  Mastering TypeScript - Fourth Edition

Product typeBook
Published inApr 2021
Reading LevelIntermediate
PublisherPackt
ISBN-139781800564732
Edition4th Edition
Languages
Typescript
Tools
Visual Studio
Concepts
Programming Language
Right arrow
Author (1)
Nathan Rozentals
Nathan Rozentals
author image
Nathan Rozentals

Nathan Rozentals has been writing commercial software for over 30 years, in C, C++, Java and C#. He picked up TypeScript within a week after its initial release in October 2012 and realized how much TypeScript could help when writing JavaScript. He was one of the first people to start blogging about TypeScript, discussing early frameworks such as Backbone, Marionette, ExtJS and AngularJs. He knew he'd hit the mark when Microsoft staff started to reference his blog posts in their CodePlex discussion forums. Nathan's TypeScript solutions now control User Interfaces in IoT devices, run as stand-alone applications for Point-of-Sale solutions, provide complex application configuration web sites, and are used for mission-critical server APIs.
Read more about Nathan Rozentals

Right arrow

Declaration files

A declaration file is a special type of file used by the TypeScript compiler. It is only used during the compilation step and is used as a sort of reference file to describe JavaScript. Declaration files are similar to the header files used in C or C++ or the interfaces used in Java. They simply describe the structure of available functions and properties but do not provide an implementation. In this section of the chapter, we will take a look at these declaration files, what they are, and how to write them.

Global variables

Most modern websites use some sort of server engine to generate the HTML pages that we use. If you are familiar with the Microsoft stack of technologies, then you will know that ASP.NET MVC is a very popular server-side rendering engine. If you are a Node developer, then you may be using one of the popular Node packages to help construct web pages through templates, such as Jade, Handlebars, or Embedded JavaScript (EJS).

Within these...

lock icon
The rest of the page is locked
Previous Page
Chapter 8 of 19, Page 2
Next Page
You have been reading a chapter from
Mastering TypeScript - Fourth Edition
Published in: Apr 2021Publisher: PacktISBN-13: 9781800564732
© 2021 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Nathan Rozentals

Nathan Rozentals has been writing commercial software for over 30 years, in C, C++, Java and C#. He picked up TypeScript within a week after its initial release in October 2012 and realized how much TypeScript could help when writing JavaScript. He was one of the first people to start blogging about TypeScript, discussing early frameworks such as Backbone, Marionette, ExtJS and AngularJs. He knew he'd hit the mark when Microsoft staff started to reference his blog posts in their CodePlex discussion forums. Nathan's TypeScript solutions now control User Interfaces in IoT devices, run as stand-alone applications for Point-of-Sale solutions, provide complex application configuration web sites, and are used for mission-critical server APIs.
Read more about Nathan Rozentals

Other recommended products

Related to this chapter

Mastering TypeScript 3

Mastering TypeScript 3

This book is a guide to the TypeScript language, ranging from basic concepts to advanced language features. Learn to use TypeScript with a variety of frameworks, and build applications using industry-standard best practices for design patterns and testing strategies.

BookFeb 2019694 pages
Mastering TypeScript

Mastering TypeScript

Build on your knowledge of TypeScript with this comprehensive guide that covers essential concepts and techniques. You’ll be able to learn effectively with the help of practical examples and finally be able to build robust enterprise-ready apps using TypeScript and JavaScript.

BookFeb 2017552 pages
TypeScript 3.0 Quick Start Guide

TypeScript 3.0 Quick Start Guide

TypeScript is designed for development of large applications and can be used to develop JavaScript applications for both client-side and server-side execution. This book is the ideal introduction to TypeScript, covering both the basics and the techniques you need to build your own applications.

BookAug 2018158 pages
Building Modern Web Applications Using Angular 4

Building Modern Web Applications Using Angular 4

In the last few years, Angular has established itself as the number one choice of JavaScript Developers. What makes Angular special is performance and productivity. With Angular, developers can work on consistent coding patterns and build web applications that are powerful and scalable.

BookMay 2017226 pages
Learning TypeScript 2.x

Learning TypeScript 2.x

TypeScript is an open source and cross-platform statically typed superset of JavaScript that compiles to plain JavaScript and runs in any browser or host. This book is a step-by-step guide that will take you through the use and benefits of TypeScript with the help of practical examples.

BookApr 2018536 pages
TypeScript 2.x By Example

TypeScript 2.x By Example

The TypeScript language, compiler, and open source development toolset brings JavaScript development up to the enterprise level. It allows you to use ES5, ES6, and ES7 JavaScript language features today, including classes, interfaces, generics, modules, and more. Its simple typing syntax enables building large, robust applications using object-oriented techniques and industry standard design principles. This book will teach you TypeScript by building various real-world applications. It will take you through a learning journey, taking you from basic to advanced TypeScript concepts by implementing them in applications. Following this book, you will learn to create large, robust, and scalable web applications using TypeScript and Angular. You will also get familiar with advanced Javascript features using TypeScript, such as asynchronous programming.

BookDec 2017372 pages
Hands-On TypeScript for C# and .NET Core Developers

Hands-On TypeScript for C# and .NET Core Developers

Writing clean, object-oriented code in JavaScript gets trickier and complex as the size of the project grows. This is where Typescript comes into the picture; it lets you write pure object-oriented code with ease, giving it the upper hand over JavaScript. This book introduces you to basic TypeScript concepts by gradually modifying standard JavaScript code

BookOct 2018460 pages5
Learning Angular

Learning Angular

If you want to build cross-platform web applications using the robust Angular web framework, this book is for you. Learning Angular will cover the core concepts of frontend web development using easy-to-follow instructions to help you get up and running with Angular web development in no time.

BookSep 2020430 pages
The TypeScript Workshop

The TypeScript Workshop

Kickstart your learning with this hands-on guide to programming with TypeScript. By learning how to quickly transition from JavaScript, leverage features such as types and decorators, and incorporate React with TypeScript, you can gain new skills, advance your knowledge, and make some new additions to your software development toolkit.

BookJul 2021714 pages
Learn TypeScript 3 by Building Web Applications

Learn TypeScript 3 by Building Web Applications

Learn TypeScript 3 by Building Web Applications?is a practical guide which gives you hands-on experience with Typescript by?guiding you to write multiple modern Web applications.?While building these applications from scratch and enhancing them, you will learn the basics as well as advanced concepts of Typescript.

BookNov 2019804 pages

Personalised recommendations for you

Based on your interests and search pattern

C++ Programming for Linux Systems

C++ Programming for Linux Systems

This book covers the essential system programming tools and helps you explore the features of C++20. It emphasizes important details to maintain code quality and tackle everyday challenges of developing software for high performance, optimization, and more.

BookSep 2023288 pages
Expert C++

Expert C++

Discover advanced programming techniques, the latest features of C++17 and C++20, and best practices for memory management, debugging, testing, and large-scale application design with Expert C++. Ideal for experienced developers advancing to proficient programmers and building professional-grade C++ applications.

BookAug 2023604 pages
iOS 17 Programming for Beginners

iOS 17 Programming for Beginners

iOS 17 Programming for Beginners, Eighth Edition is your comprehensive guide to learning the art of iOS app development. Whether you dream of creating the next chart-topping app or simply want to enhance your programming skills, this book is your trusted companion on this exciting journey.

BookOct 2023604 pages4
Developer Career Masterplan

Developer Career Masterplan

Written by industry experts that have spent the last 20+ years helping developers grow their career path towards senior developer positions and beyond. This book provides a comprehensive guide, sharing examples and stories from their global careers. By the end, you’ll have the knowledge to create a clear career progression plan as a technical professional.

BookSep 2023310 pages
Refactoring with C#

Refactoring with C#

In Refactoring with C#, you’ll explore the process of safely refactoring modern .NET code using Visual Studio features, advanced unit tests, AI assistance, and custom Roslyn analyzers.

BookNov 2023434 pages
Python Real-World Projects

Python Real-World Projects

Amplify your developer journey by curating a dynamic project portfolio that outshines traditional resumes. Delve into the Python realm through immersive projects, mastering core concepts while constructing comprehensive modules and applications. From data acquisition prowess to impactful data visualization, Python Real-World Projects arms you with essential skills to beat the competition.

BookSep 2023478 pages5
The MVVM Pattern in .NET MAUI

The MVVM Pattern in .NET MAUI

The MVVM Pattern in .NET MAUI enables developers to master MVVM principles and effectively apply them to .NET MAUI. This book uses real-life examples and covers complex problems to help you successfully apply MVVM with .NET MAUI to confidently develop robust and high-performing cross-platform apps.

BookNov 2023386 pages
Extending Microsoft Business Central with Power Platform

Extending Microsoft Business Central with Power Platform

Extending Business Central with the Power Platform is a step-by-step guide for Business Central professionals to create solutions that automate business processes, explain complex workflow approvals, and integrate with hundreds of other systems, without traditional development. It’ll guide you in customizing Business Central with Power Platform.

BookAug 2023458 pages5
Extending Microsoft Business Central with Power Platform

Extending Microsoft Business Central with Power Platform

Extending Business Central with the Power Platform is a step-by-step guide for Business Central professionals to create solutions that automate business processes, explain complex workflow approvals, and integrate with hundreds of other systems, without traditional development. It’ll guide you in customizing Business Central with Power Platform.

BookAug 2023458 pages5
Quantum Computing Algorithms

Quantum Computing Algorithms

The book emphasizes intuitive ideas behind quantum algorithms in ways that other books don’t cover, striking a careful balance between no math and too much math. To get the most from this book, you should be comfortable with basic algebra and writing simple computer code. No prior understanding of quantum physics is needed to get started.

BookSep 2023342 pages
Python – Complete Python, Django, Data Science and ML Guide

Python – Complete Python, Django, Data Science and ML Guide

Unlock Python's full potential with this 50+ hour course! From programming to web and game development, data manipulation, and machine learning, gain the skills required to succeed in various Python-related careers. With practical tasks, hands-on experience, and a strong foundation in Python, you'll be ready to tackle real-world challenges and take advantage of the many opportunities this versatile language offers.

VideoNov 202350 hours 30 minutes5
Python – Complete Python, Django, Data Science and ML Guide

Python – Complete Python, Django, Data Science and ML Guide

Unlock Python's full potential with this 50+ hour course! From programming to web and game development, data manipulation, and machine learning, gain the skills required to succeed in various Python-related careers. With practical tasks, hands-on experience, and a strong foundation in Python, you'll be ready to tackle real-world challenges and take advantage of the many opportunities this versatile language offers.

VideoNov 202350 hours 30 minutes5