Node.js and NPM

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Do curso por The Hong Kong University of Science and Technology

Multiplatform Mobile App Development with React Native

59 classificações

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The Hong Kong University of Science and Technology

Multiplatform Mobile App Development with React Native

59 classificações

Curso 3 de 4 em Specialization Full-Stack Web Development with React

This course focuses on developing truly cross-platform, native iOS and Android apps using React Native (Ver 0.55) and the Expo SDK (Ver. 27.0.0). React Native uses modern JavaScript to get truly native UI and performance while sharing skills and code with the web. You will learn about UI development with React Native UI and layout support and access the native mobile platform's capabilities from Javascript using the Expo SDK. You should have already completed the Bootstrap 4 and the React courses in this specialization before proceeding with this course. At the end of this course you will be able to (a) Build mobile applications targeting multiple platforms with a single codebase, (b) Leverage your React and Javascript skills, (c) Use various features of React Native and the Expo SDK to build truly cross-platform mobile applications, and (d) Use Redux to design the architecture for a React-Redux application

Na lição

Multiplatform Mobile App Development with React Native: An Introduction

This module introduces you to hybrid mobile application development. You will learn about React Native and explore some of the features of React Native to implement a mobile app based on the React application that was implemented in the previous course on React.

Exercise (Video): Setting up Git6:48

Exercise (Video): Basic Git Commands18:37

Exercise (Video): Online Git Repositories12:19

Node.js and NPM3:56

Exercise (Video): Setting up Node.js and NPM2:24

Exercise (Video): Basics of Node.js and NPM23:13

Conheça os instrutores

Jogesh K. Muppala
Associate Professor
Department of Computer Science and Engineering

JavaScript which was designed as a scripting language for the browser,

has seen deployment far beyond the browser.

Node.js has played a significant role in

this shift of JavaScript from the browser to the desktop.

Let's now learn a little bit about what Node.js is and what role does NPM,

the Node Package Manager,

play in the context of Node.js.

Node.js, as I mentioned earlier,

allows us to bring the power of JavaScript to the desktop.

Node.js is based on

the JavaScript runtime engine that has been built for the Chrome browser.

So the Chrome V8 JavaScript engine has been ported from the browser to

run on the desktop and support the execution of JavaScript programs on the desktop.

Node.js is built around an event-driven, non-blocking IO model,

which makes it very efficient to run JavaScript programs

on the desktop and synchronous JavaScript on the desktop.

Now, this is where node finds its true power.

Right now, we will examine Node.js in the context of its use as a JavaScript runtime.

They will look at the server-side application of

Node.js in detail in the last course of this specialization.

This is the typical architecture of Node.js.

So in this, that Chrome V8 engine is at the bottom layer together with

Libuv forms the layer that interacts

with the underlying computer system to support the execution of JavaScript programs.

On top of it, we have node bindings which is also implemented in C++.

At the top layer, you have the Node.js and standard library,

which are all implemented in JavaScript,

and this is what enables us to write JavaScript programs and run them on the desktop.

Naturally, the ability to run JavaScript programs on the desktop energize

the web development community to explore using

JavaScript to develop a significant number of web development tools.

Tools such as Bower, Grunt,

Gulp, Yeoman, and many others.

We will explore some of these in the later part of this course and in subsequent courses.

The last course in the specialization, as I mentioned,

looks at the use of Node.js on the server-side.

How we can develop Web server,

business logic all implemented in JavaScript on the server-side.

Together with node, you often hear people talking about the Node Package Manager or NPM.

When you install node on your computer,

NPM automatically gets installed.

The node package manager is the manager for the node ecosystem that manages

all the node modules and packages that have been made

publicly available by many different users.

A typical node package consist of JavaScript files together with a file

called package.json which is the manifest file for this node module.

We will look at how we can use the

package.json file in more detail in the subsequent exercises.

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