New research shows Microsoft TypeScript's popularity is rocketing and that nearly all JavaScript developers are worried about open-source security.

More than a third of the websites you visit online may include an outdated JavaScript library that's vulnerable to one or more security flaws.

Use popular 'grammar of data' syntax to filter and subset your two-dimensional JavaScript arrays and more. Here's how to use Arquero for data wrangling in Observable JavaScript and Node.js.

Built-in JavaScript objects and functions are ones you'll use all the time. Here's how to use Object, JSON, String, Math, Date, and console in your JavaScript programs.