Grouping in drop-down

1. How do I group a drop-down list?
2. How do I group a drop-down list in HTML?
3. What are drop-down lists called?

How do I group a drop-down list?

How to create a group of related options in a drop-down list using HTML ? We can define a group of related options in a drop-down list by using the <optgroup> Tag tag is used to create a group of same category options in a drop-down list. The tag is required when there is a long list of items.

How do I group a drop-down list in HTML?

The <optgroup> tag is used to group related options in a <select> element (drop-down list).

What are drop-down lists called?

A drop-down list (abbreviated drop-down, or DDL; also known as a drop-down menu, drop menu, pull-down list, picklist) is a graphical control element, similar to a list box, that allows the user to choose one value from a list.