nodejs check installation successful

Node.js is a powerful JavaScript runtime environment suitable for server-side and client-side application development. It has the advantages of fast, efficient, scalable and cross-platform, so it has been widely used in web development.

Before we start using Node.js, we need to check whether it is installed correctly. This article will introduce how to check whether the Node.js installation is successful and provide some quick verification methods.

Step 1: Check the Node.js version

Checking the Node.js version is an important step to detect the installation. You can check it through the following command:

node -v

On the command line Enter the command and press Enter, the version number of Node.js will be displayed, for example:

v14.17.0

If the version number is displayed, it means that Node.js has been successfully installed and available.

Step 2: Check the path of Node.js

In addition to the version number, we can also check the path of Node.js for installation detection. Enter the following command on the command line:

which node

This command will tell us the installation path of Node.js, for example:

/usr/local/bin/node

This means that Node.js has been installed locally in /usr/local/bin directory, the executable file for Node.js can be found in this folder.

Step 3: Quickly test the Node.js installation

Enter the following code on the console:

node -e "console.log('Hello, Node.js')"

This command will print out "Hello, Node.js" on the console . If the output is normal, it means that Node.js has been successfully installed and available.

Step 4: Install Node.js command line tools

Node.js provides some very useful command line tools that can help us develop better. For example, the npm tool is the default package manager for Node.js. If we want to install the npm tool globally, we only need to run the following command in the command line:

npm install -g

If no error prompts appear, npm is installed successfully.

Conclusion

With the above method, we can easily check the installation of Node.js. If you encounter any issues or are unsure whether the installation was successful, please consult the Node.js documentation or contact the community for help. Node.js has a large developer community and many helpful resources to help you learn more about and use it.

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