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Usage & Behavior

General guidelines

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A drop down menu can have a preceding label, or not (see example below).

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The label should be clear and short (limited to a single line).

Internal Logic

Users need to select one item exclusively from a short list of options (minimum 3 items, maximum - y).

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Once the user selects an option, the list box closes and the selected option is displayed in the field. 

Hovered items are highlighted with a light blue background color. 

Selected items have a blue V sign on the left side of the value as shown below

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Unlike 'Combo Box', the user cannot enter text in the text box.

Validations and errors

Please refer to Field validation page for more information.

An example for a drop down menu with a warning: 

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• The drop down should be used when the list of available values is long and space is constrained.
• Only a list with over 15 items should show a scrollbar.
• When there are less than 7 options and the user needs to see them all at once → use radio buttons.
• When the user needs to enter a value which is not in the list → use a combo box.
• Keep the text values as short as possible because the list uses single lines only. 
• The option list should adapt its length to the longest entry by default, but values that are too long may be truncated with a tooltip displaying their full text (not recommended) - There is no horizontal scrolling in the option list. 
• Place options that represent All or None at the beginning of the list, regardless of the sort order of the remaining items.
• Do not allow the control to auto-adjust based on the selection.

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