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.

We are now living in a golden age of “object labeling” memes. By Heather Schwedel. March 22, 2018 11:36 AM. Animation by Lisa Larson-Walker. Photo by Antonio Guillem/Thinkstock.