ExpressJS i About the Tutorial Express is a minimal and flexible Node js web application framework that provides a robust set of features for web and mobile
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ExpressJS i About the Tutorial Express is a minimal and flexible Node js web application framework that provides a robust set of features for web and mobile
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ExpressJS
i Express is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications. It is an open source framework developed and maintained by the Node.js foundation. This tutorial has been created for anyone who has a basic knowledge of HTML, Javascript and how client-servers work. After completing this tutorial, you will be able to build moderately complex websites and back-ends for you mobile applications. You should have basic knowledge of Javascript and HTML. If you are not acquainted with these, we suggest you to go through tutorials on those areas first. It will definitely help, if you have some exposure to HTTP, although it is not mandatory. Having a basic knowledge of MongoDB will help you with the Database chapter.Copyright 2017 by Tutorials Point (I) Pvt. Ltd.
All the content and graphics published in this e-book are the property of Tutorials Point (I) Pvt. Ltd. The user of this e-book is prohibited to reuse, retain, copy, distribute or republish any contents or a part of contents of this e-book in any manner without written consent of the publisher. We strive to update the contents of our website and tutorials as timely and as precisely as possible, however, the contents may contain inaccuracies or errors. Tutorials Point (I) Pvt. Ltd. provides no guarantee regarding the accuracy, timeliness or completeness of our website or its contents including this tutorial. If you discover any errors on our website or in this tutorial, please notify us at contact@tutorialspoint.comExpressJS
iiAbout the Tutorial .................................................................................................................................... i
Audience .................................................................................................................................................. i
Prerequisites ............................................................................................................................................ i
Copyright & Disclaimer ............................................................................................................................. i
Table of Contents ................................................................................................................................... iii
EXPRESSJS - OVERVIEW ....................................................................................................... 1
EXPRESSJS - ENVIRONMENT ............................................................................................... 2
Node Package Manager(npm) ................................................................................................................. 2
EXPRESSJS - HELLO WORLD ................................................................................................. 5
How the App Works? .............................................................................................................................. 6
EXPRESSJS - ROUTING ......................................................................................................... 7
app.method(path, handler) ..................................................................................................................... 7
Routers ................................................................................................................................................... 8
EXPRESSJS - HTTP METHODS ............................................................................................ 10
EXPRESSJS - URL BUILDING ............................................................................................... 11
EXPRESSJS - MIDDLEWARE................................................................................................ 14
Third Party Middleware ........................................................................................................................ 16
EXPRESSJS - TEMPLATING ................................................................................................. 18
Important Features of Pug .................................................................................................................... 19
EXPRESSJS - SERVING STATIC FILES ................................................................................... 26
ExpressJS
iiiEXPRESSJS - FORM DATA .................................................................................................. 28
EXPRESSJS - DATABASE ..................................................................................................... 31
Setting up Mongoose ............................................................................................................................ 31
Saving Documents ................................................................................................................................. 32
Retrieving Documents ........................................................................................................................... 35
Updating Documents ............................................................................................................................ 37
Deleting Documents .............................................................................................................................. 39
EXPRESSJS - COOKIES ........................................................................................................ 42
EXPRESSJS - SESSIONS ....................................................................................................... 45
EXPRESSJS - AUTHENTICATION ......................................................................................... 48
EXPRESSJS - RESTFUL APIS ................................................................................................ 55
EXPRESSJS - SCAFFOLDING ................................................................................................ 65
EXPRESSJS - ERROR HANDLING ......................................................................................... 67
EXPRESSJS - DEBUGGING .................................................................................................. 69
EXPRESSJS - BEST PRACTICES ............................................................................................ 70
Directory Structure................................................................................................................................ 70
EXPRESSJS - RESOURCES ................................................................................................... 73