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Questions and Answers
What is the primary purpose of the command npm init -y?
What is the primary purpose of the command npm init -y?
- To create a new directory for a project.
- To create a new JavaScript file.
- To install Node.js on your system.
- To initialize a new Node.js project with default settings. (correct)
What functionality does the express package provide in a Node.js application?
What functionality does the express package provide in a Node.js application?
- Middleware for enabling Cross-Origin requests.
- A web application framework for building APIs and web applications. (correct)
- An ORM to manage database relations.
- Database interaction using SQL syntax.
Which of the following commands will change the current working directory to 'calendar-service'?
Which of the following commands will change the current working directory to 'calendar-service'?
- mkdir calendar-service
- cd calendar-service (correct)
- npm install calendar-service
- npm start calendar-service
What is the role of sequelize in a Node.js application?
What is the role of sequelize in a Node.js application?
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Which command is responsible for installing multiple packages simultaneously?
Which command is responsible for installing multiple packages simultaneously?
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Study Notes
Setting Up a Calendar Service Project
- The
mkdir calendar-servicecommand creates a new directory namedcalendar-service, which will contain the project files. - The
cd calendar-servicecommand changes the current directory tocalendar-service, meaning all subsequent commands will be executed within this directory. - The
npm init -ycommand initializes a new Node.js project by creating apackage.jsonfile with default settings. The-yflag automatically agrees to all prompts, avoiding manual input. - The
npm install express mysql2 sequelize corscommand installs essential packages for the calendar service:- Express: A web framework for Node.js used for building APIs and web applications.
- mysql2: A MySQL client for Node.js, enabling interaction with MySQL databases.
- sequelize: An ORM for Node.js simplifying database interaction by allowing JavaScript objects instead of raw SQL.
- cors: Middleware for Cross-Origin Resource Sharing (CORS), allowing the server to handle requests from different origins.
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