Checking the Existence of a File in Node.js

In this blog post, we will explore different methods to check if a file exists in the filesystem using Node.js and the fs module. We will cover both synchronous and asynchronous approaches. Using fs.existsSync() The easiest way to check if a file exists in Node.js is by using the fs.existsSync() method. This method is synchronous, which means it will block the program until the file’s existence is determined. const fs = require('fs'); const path = '....

How to Check the Current Node.js Version at Runtime

To check the current Node.js version at runtime, you have a few options. The first option is to use the version property of the process object. By running process.version, you will receive a string that represents the current Node.js version. Here is an example: console.log(process.version); However, please note that this approach will result in a ReferenceError in the browser, as the process object is not defined there. Alternatively, you can use process....

How to Verify if a JavaScript Array Contains a Specific Value

When working with JavaScript arrays, it is quite common to need to check if a particular item is present. Fortunately, JavaScript provides us with a handy method called includes() that allows us to perform this check easily. To use the includes() method, you simply call it on the array instance, followed by the value you want to check for. The method returns true if the item is found in the array, and false otherwise....