What's the best way to display additional option information in a dropdown?

1. How can more than one option be selected in drop-down?
2. Which of these elements is used to insert choices in a drop-down list?
3. How to select multiple options from a drop-down list in javascript?

How can more than one option be selected in drop-down?

To select multiple items, the user has to hold down the shift or ctrl key, then select with the mouse.

Which of these elements is used to insert choices in a drop-down list?

The <select> element is used to create a drop-down list. The <select> element is most often used in a form, to collect user input. The name attribute is needed to reference the form data after the form is submitted (if you omit the name attribute, no data from the drop-down list will be submitted).

How to select multiple options from a drop-down list in javascript?

First, is the dropdown button using the select tag of HTML with its own id, and second is normal using the input tag in which we pass type, onclick, and value. When we click the second button it is called the function “multiFunc”, it is connected by the onclick function.