Entry
How do I get the value from a selected option in a dynamically generated listbox?
Oct 3rd, 2003 15:25
Jack Coates, Arsen Yeremin, Bob Stirling,
<html>
<head>
<title>My Listbox</title>
<script>
function WhatIsSelected()
{ var obj_list_box = document.my_form.my_select;
alert(obj_list_box.options[obj_list_box.selectedIndex].value)
}
</script>
</head>
<body>
<form name="my_form">
<select name="my_select">
<option value="a">a</option>
<option value="b">b</option>
<option value="c">c</option>
<option value="d">d</option>
<option value="e">e</option>
</select>
</form>
<a href="javascript:WhatIsSelected()">What is Selected</a>
</body>
</html>
that's not actually a dynamically generated menu, unfortunately. This is:
<html>
<head>
<title>My Listbox</title>
<script>
var source = new Array("('Please Select...'),'',true,true)",
"('1')","('2')","('3')");
var mydoc = document.my_form.my_select
while (source.length < mydoc.length) {
mydoc.options[(mydoc.options.length -1)] = null;
}
for (var i=0; i < source.length; i++) {
eval("mydoc.options[i]=" + "new Option" + source[i]);
}
function WhatIsSelected()
{ var obj_list_box = document.my_form.my_select;
alert(obj_list_box.options[obj_list_box.selectedIndex].value)
}
</script>
</head>
<body>
<form name="my_form">
<select name="my_select">
</select>
</form>
<a href="javascript:WhatIsSelected()">What is Selected</a>
</body>
</html>
Can anyone force selection of an item in it?
