The installer starts nodejs

In the current technology field, JavaScript is no longer just a front-end language. As a server-side engine that runs JavaScript code, Node.js has become an integral part of back-end development. It enables front-end developers to use the same language for back-end development, and compared to traditional back-end development languages, Node.js is easier to get started and more efficient. Here are the simple steps on how to install the program to start Node.js.

Step one: Download the Node.js installation package

Download the Node.js installation package from the official website (https://nodejs.org/en/). Select the corresponding version according to the required operating system and click download.

Step 2: Install Node.js

Double-click the downloaded installation package and install according to the prompts. During the installation process, you can select some custom settings according to your needs, such as installation path, etc. When choosing an installation path, it is recommended to choose a location with sufficient disk space.

Step 3: Check the version of Node.js

After installing Node.js, open the command line tool and enter the following command:

node -v

The current output will be The installed Node.js version number. If the version number is output, Node.js is installed successfully.

Step 4: Use Node.js

After successful installation, you can use Node.js to run JavaScript code on the command line. For example, entering the following code on the command line:

console.log('Hello World');

will output "Hello World". Among them, console is the built-in debugging tool of Node.js, which is used to output information.

In addition, Node.js also supports importing other JavaScript modules through the require() function. For example, to import a module named test.js, you can use the following code:

var test = require('./test.js');

Where, './test.js' represents the relative path of the test.js file.

Summary

The above are the basic steps for the installer to start Node.js. When using Node.js for back-end development, it is recommended to be proficient in the modularity, event-driven, asynchronous programming and other features of Node.js. This will help you better utilize the advantages of Node.js for development.

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