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 …

Arrays are a commonly used data structure in JavaScript. When interacting with arrays, you likely want to manipulate them by adding new items. In some situations, you may want to add items to the beginning of an array. This tutorial shows you three ways on how to prepend items to …

Interacting with data from third-party sources like APIs comes with challenges. You’re not in control of the data format and style. Sometimes, you wish to transform the data to your preferred style. This tutorial shows you how to transform the keys of an object into camelCase format. {{outline}} CamelCase …