i am new to jquery and what i intend to do now is to load json from
server and then based on the json, remove all options from a drop down
and populate it with new items from the json. something like a
cascading drop down.
i dunno if the json outputted is correct? do i need something like
"department": ['xxx', 'yyy', 'zzz']
[
{Value: 1, Item: Physics},
{Value: 2, Item: Chemistry},
{Value: 3, Item: Biology}
]
then i want to remove all <option> from a drop down then populate it
with something like
<option value="1">Physics</option>
<option value="2">Chemistry</option>
<option value="3">Biology</option>
if possible, it will be good if i can have a default "null" option eg
"Please select an option" that does not do anything if the user
selects it or shows at the start and disappears once user selects it?
whats the best way of having this default value? i think its very
common.
