< 1 min readTo print text to the console without a trailing newline in Node.js, you can use the process.stdout.write() function instead of the console.log() function. The process.stdout.write() function writes a string to the standard output stream (stdout) without adding a newline at the end. This allows you to print multiple strings on the same line in the…
< 1 min readTo access form fields in an HTTP POST request in an Express.js app, you can use the body-parser middleware. The body-parser middleware parses the request body and populates the request.body object with the parsed data. Here’s an example of how to use the body-parser middleware to access form fields in an HTTP POST request: In…
2 min readTo change the font color of text output to the console in Node.js, you can use ANSI escape codes. ANSI escape codes are special character sequences that can be used to change the formatting of text in the terminal. To set the font color, you can use the \x1b[3xm escape code, where x is a…
< 1 min readTo parse a JSON string in Node.js, you can use the JSON.parse() function. This function takes a JSON string as an argument and returns a JavaScript object or array constructed from the JSON string. Here’s an example of how to parse a JSON string: In this example, we parse a JSON string that represents an…
2 min readTo create a directory in Node.js, you can use the fs (file system) module and the fs.mkdir() function. This function takes a path and an optional options object, and creates the directory at the specified path. Here’s an example of how to create a directory if it doesn’t exist: In this example, we first check…
< 1 min readWhen installing a package using npm (the package manager for Node.js), you can use the –save flag to add the package to your project’s dependencies in the package.json file. This indicates that the package is required for your project to run and should be installed when running npm install. On the other hand, the –save-dev…
< 1 min readTo Base64-encode a string in Node.js, you can use the Buffer class and its .toString() method. Here’s an example: You can also use the Buffer.from() method to decode a Base64-encoded string: Alternatively, you can use the built-in Buffer global and the .toString() method to achieve the same results: Note: The Buffer class was designed to…
< 1 min readTo uninstall an npm module in Node.js, you can use the uninstall command of the npm CLI (Command Line Interface). The uninstall command takes the name of the module that you want to uninstall as an argument. For example: This will uninstall the express module from your Node.js project. You can also use the -S…
< 1 min readTo read environment variables in Node.js, you can use the process.env object. The process.env object contains a property for each of the environment variables that are available to the Node.js process. You can access the value of an environment variable using dot notation or bracket notation. Here’s an example of how you can read an…
< 1 min readThe process.argv property returns an array containing the command-line arguments passed when the Node.js process was launched. The first element will be process.execPath. See process.argv0 if access to the original value of argv[0] is needed. The second element will be the path to the JavaScript file being executed. The remaining elements will be any additional…
