Add Options to a Combo Box Using JavaScript
From SmartWiki
You can use a JavaScript function to modify the options available in a pull-down box on the page.
The following example adds a new blank selection at the top of the starthour field at Level 2:
function changeStartHour() { try { document.forms[0].starthour.add(new Option("", "", true, true), document.forms[0].starthour.options[0]) } catch(e) { //in IE, try the below version instead of add() document.forms[0].starthour.add(new Option("", "", true, true), 0) } } changeStartHour();
The options available are:
- document.forms[0].starthour.add(new Option(Display text, Store value, defaultSelected, selected), document.forms[0].starthour.options[0])