- What is nested dropdown?
- How to create dropdown menu in Bootstrap 4?
- How do I create multiple drop down menus in HTML?
What is nested dropdown?
Nested dropdowns allow you to have a second dropdown appear once a first dropdown is answered. This is particularly helpful for cases involving responses dependent on a previous answer. (For example, someone's country, state, and city).
How to create dropdown menu in Bootstrap 4?
Basic Dropdown
To open the dropdown menu, use a button or a link with a class of . dropdown-toggle and the data-toggle="dropdown" attribute. Add the . dropdown-menu class to a <div> element to actually build the dropdown menu.
How do I create multiple drop down menus in HTML?
Use a container element (like <div>) to create the dropdown menu and add a grid (columns) and add dropdown links inside the grid. Wrap a <div> element around the button and the container element (<div> to position the dropdown menu correctly with CSS.