This example shows how to extend mapboxGL's
Marker class to add custom functionality on click.
MapboxGL has a very convenient
Marker class that can be used to quickly get markers on the map with a few lines of code (versus the more complex method of adding sources and layers). They behave a bit differently from the rest of the map features because they are actually HTML elements overlaid on the map canvas.
The stock markers are great, and they are SVG so you can color them by passing in a
color option! However, the only interactivity you can easily set up is a popup. When you google 'clickable markers', the examples you find are all using
symbol layers with
I wanted to trigger navigation in a single page app using the stock Markers and determined a simple extension of the class would help me accomplish this. You can also see these markers in action at https://paintthetown.chriswhong.com
How it works
Marker already has an internal method
_onMapClick which is used by the popup functionality. The extension does two things:
Adds the method
onMapClickwhich takes a function and can be chained with other methods.
_handleClickif it exists.
Some CSS is used to set the pointer to a cursor on hover, and to change the fill.