document.frm.mysel[].selected

[Anon]

I need to fill an Multiple Select Box dynamically.

I also need to pass this box to the next page.

I can do this as long as my select name does not have the array [] indicator.

However my values that I am getting into the next page cannot be easily parsed.

If I use the [] tag in the name I get errors while trying to perfom the dynamic select.

Help....

[[deleted]]

You need the [ ] to make the vars into an array in PHP,
but you can't use the [ ] in javascript.

Nice dilemma huh.. :-)

[Anon]

NO WORRIES! This problem is easy. Just refer to the select in the following fashion:

document.frm.elements["mysel[]"].selected

This will work with any of the array inputs as long as there is only one input on the page. Now if you had 2 mysel[]s on the page that is a different problem. Your best be then is to refer to the element ordinally:

<INPUT NAME=mysel[]...
<INPUT NAME=mysel[]...
document.frm.elements[1].selected

This will get the selected index of the second mysel[]. A little trick I do is I use a hidden inputs right before the array input (mysel[]) so that if I don't know where something appears, I can track it down:

<INPUT TYPE=HIDDEN NAME="tracker" VALUE="mysel[0]"
<INPUT NAME=mysel[]...
<INPUT TYPE=HIDDEN NAME="tracker" VALUE="mysel[1]"
<INPUT NAME=mysel[]...

Then I use a javascript function that checks the hidden inputs until the right one is found, and returns it's element index + 1, which in the above case would return 3.