element? How do I make a placeholder for a select box? Semantic UI: Multi Select Dropdown pre-select values. Default Value for Dropdown? - HTML CSS - The SitePoint Forums.How to set default value on form drop downs - HTML CSS - The Jun 13, 2012 I have a form with select drop down options. Home. Computers Internet html - Dropdown default values return null?I have html in my JSP which ask simple questions, as well as having drop- down boxes for users to select their responses. Thread Modes. Dropdown default value.