Populating Select Lists

[bryan.christina]

This semester in school, I'm taking an Introduction to JavaScript class
online through my local community college. I'm having with an
assignment that requires you to set up two select lists. When you
select an option on the first list, it populates the second list with
specific information unique to that selection (Our example is to select
a state that would then populate a city list in the second). I can not
find any information or example to help with the script I need to
write, are there any suggestions?

Bryan

 

[ASM]

(e-mail address removed) a écrit :

This semester in school, I'm taking an Introduction to JavaScript class
online through my local community college. I'm having with an
assignment that requires you to set up two select lists. When you
select an option on the first list, it populates the second list with
specific information unique to that selection (Our example is to select
a state that would then populate a city list in the second). I can not
find any information or example to help with the script I need to
write, are there any suggestions?

You could try to find infos about new Option()

new Option(value, text)


Example with :
- selct = selector (dropdown list)
- list = array of items (fruits, materials, states, towns ...)

function fillSelect(selct, list) {
// to empty selector
selct.length = 0;
// new options
for (var i=0; i<list.length; i++)
{
// new option : value and text
var o = new Option(list, list)
// grow selector adding new option
selct[selct.length] = o;
}
}

 

[Stephen Chalmers]

to set up two select lists. When you
select an option on the first list, it populates the second list with
specific information unique to that selection (Our example is to select
a state that would then populate a city list in the second). I can not
find any information or example to help with the script I need to
write, are there any suggestions?

Where did you look? This homework question comes up so often that it's
difficult to avoid references to it.

Google: javascript +populate +"select box"