Creating a routing app with Google Maps API from scratch

One missing CSS rule can make your map disappear. Learn this and other critical tips for building a complete routing app with the Google Maps API.

#1about 2 minutes

Overview of the three map applications to be built

A brief introduction to the three projects that will be created from scratch: a styled map, a geolocated map, and a route-planning application.

#2about 5 minutes

Setting up the basic HTML and script structure

Learn how to structure the HTML file, include the Google Maps API script with a key and callback function, and prepare the initial JavaScript setup.

#3about 9 minutes

Rendering a basic map with a marker and custom styles

Instantiate a basic map with a specific center and zoom level, add a marker to a location, and apply custom JSON styles for unique visual themes.

#4about 11 minutes

Using browser geolocation to center the map on the user

Access the user's location using the browser's `navigator.geolocation` API and dynamically update the map's center and add a marker to their current position.

#5about 22 minutes

Creating a complete route planning application

Build a routing feature by capturing user input for a destination, using geolocation for the origin, and leveraging the Directions Service and Directions Renderer to calculate and display the route on the map.

#6about 7 minutes

Q&A on API billing, local development, and best practices

A discussion covering the Google Maps API free tier, how usage is counted during local development, and important best practices like managing API keys in production.