How do I create a tree view?

Learn how to create a tree view with CSS and JavaScript.

Read on how to do it in this tutorial: https://www.w3schools.com/howto/howto_js_treeview.asp 

Tree View

A tree view represents a hierarchical view of information, where each item can have a number of subitems.

Click on the arrow(s) to open or close the tree branches.

Try it yourself here: https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_treeview