How can we deselect options in html dynamically (using javascript)

[ahmad]

when i used the statment
for(var i = 0; i < menu.length; i++)
{
menu.options.selected = "false";
}

to deselect all the options within a list, it surprisingly selected all
the options. I tried another option like

menu.options.removeAttribute("selected");

it also didnt work without any error message.

what would be the solution of this problem. i want to deselect all the
options of a list dynamically.

 

[VK]

when i used the statment
for(var i = 0; i < menu.length; i++)
{
menu.options.selected = "false";
}

to deselect all the options within a list, it surprisingly selected all
the options. I tried another option like

menu.options.removeAttribute("selected");

it also didnt work without any error message.

what would be the solution of this problem. i want to deselect all the
options of a list dynamically.

AFAIK select-multiple requires physical user interaction (Ctrl+Click
etc.) to make multiple selections. This interface is not
programmatically exposed - it's part of interface protection.

Together with your other post (styling separate select options) I would
suggect either to change the whole concept (whatever it is right now)
or to use a DHTML widget instead of conventional <select>.

 

[Michael Winter]

when i used the statment
for(var i = 0; i < menu.length; i++)
{
menu.options.selected = "false";
}

to deselect all the options within a list, it surprisingly selected all
the options.

The selected property is a boolean, and /any/ non-empty string
type-converts to true. So, that assignment might as well have been:

menu.options.selected = true;

[snip]

Hope that helps,
Mike