You may want to determine whether a given path is a directory when working with the file system in Node.js. Node.js comes with the fs core module allowing you to interact with the local hard disk. This tutorial shows you how to combine existing fs methods to determine …

Sometimes you need to break out of a loop in JavaScript. For example, you may want to stop iterating through an array of items as soon as you find a specific element. TL;DR: use break to exit a loop in JavaScript. This tutorial shows you how to terminate the …

Sometimes you want to ensure a given value is actually a string. For example, you may want to confirm a name property to be a string value. This tutorial shows you how to detect whether a given value is a string in JavaScript. {{outline}} Determine If a Given Value Is …

When working with text in JavaScript, you may need to limit the number of characters of a string value. For example, the tutorial overview here on Future Studio displays an excerpt of 300 characters providing a short introduction. This tutorial shows you how to limit a string in JavaScript to …

Node.js ships with a file system module allowing you to interact with files on the local hard disk. The file system module fs provides two methods allowing you to rename files: Fs#rename and Fs#renameSync. This tutorial shows you how to rename a file synchronously and asynchronously using …

When interacting with the file system, you may want to check whether a file exists on the hard disk at a given path. Node.js comes with the fs core module allowing you to interact with the hard disk. This tutorial shows you how to use Node.js to determine …

We recently ran into a problem with a large array. The number of items in the array was too large to process them at once. We wanted to offload smaller chunks of these items to a queue worker. This tutorial shows you how to split an array into a list …

Arrays are a commonly used data structure in JavaScript applications. Arrays represent a list of items that you can manipulate to your own needs. You can add new items to an existing array with ease. This tutorial shows you three ways of appending new items to the end of an …