How do I display an 'all' option to users in a multi-select box?

1. How do you select all options in MultiSelect?
2. How to show all options in select HTML?
3. How do I select all options in a dropdown?

How do you select all options in MultiSelect?

Try this: $('#select_all'). click(function() $('#countries option'). prop('selected', true); );

How to show all options in select HTML?

You can click the selection field which makes it dropdown and show all available options. Clicking a new Selection option value then shows a loading spinner image while it makes an AJAX request to save the value. It then Shows the new selected Status Value SPAN. Clicking again restarts the cycle/process.

How do I select all options in a dropdown?

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