Difference between revisions of "Add Options to a Combo Box Using JavaScript"
From SmartWiki
Line 4: | Line 4: | ||
<pre> | <pre> | ||
− | try{ | + | function changeStartHour() |
− | + | { | |
− | } | + | try |
− | catch(e){ //in IE, try the below version instead of add() | + | { |
− | + | 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(); | ||
</pre> | </pre> | ||
Revision as of 14:36, 31 July 2009
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])