This tutorial provides a comprehensive guide to JavaScript Map and Set, explaining their differences, use cases, and how to use them.

In this example, I’m using Mapstraction to create a Google Map. Open a new HTML file and type the following: Just like you would for a normal Google Map, we include Google’s JavaScript (line 4).

Maps? This is possible with Mapstraction, a Javascript API that works with nine mapping services and plans to incorporate more into the fold.