Importing npm Modules

This video tutorial explains how to use the module system in Node.js to load NPM packages, allowing developers to leverage existing modules for common functionalities like data validation. It covers initializing NPM in a project, installing packages, and using them in applications. The tutorial emphasizes the importance of using well-tested NPM packages to save development time and ensure security.

What is one of the main advantages of using NPM packages in Node.js applications?

• They are mandatory for all Node.js applications.

• They make applications run faster.

• They allow developers to focus on unique features by solving common problems.

• They eliminate the need for any coding.

What is the first step to use NPM packages in a project?

• Create a new JavaScript file.

• Download the NPM package.

• Initialize NPM in the project.

• Install Node.js.

What is the purpose of the package.json file?

• To list all the contributors of the project.

• To provide a backup of the project files.

• To manage all the dependencies of the project.

• To store the source code of the application.

Why is it beneficial to use well-tested NPM packages like 'validator'?

• They are free to use.

• They are maintained by a large community and are reliable.

• They provide unique features not available elsewhere.

• They are faster than custom code.

What is the correct way to install a specific version of an NPM package?

• NPM fetch package version

• NPM install package@version

• NPM get package version

• NPM update package version

What does the node_modules directory contain?

• Backup files of the project.

• All the installed NPM packages and their code.

• Configuration files for the project.

• The main application code.

What is the role of the package-lock.json file?

• To provide a list of all contributors.

• To store user credentials securely.

• To lock the project files from editing.

• To ensure consistent package versions across installations.

How can you load an NPM package in a Node.js file?

• By copying the package code into the file.

• Using the require function.

• By referencing it in the HTML file.

• Using the import statement.

Which method from the validator package can be used to check if a string is a valid email?

• isEmail

• emailCheck

• checkEmail

• validateEmail

What should you do if you want to understand how to use a specific NPM package?

• Ask for help on social media.

• Experiment with different functions.

• Refer to the package's documentation.

• Read the package's source code.