Difference between revisions of "Add Options to a Combo Box Using JavaScript"
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| 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 13:36, 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])
