如果select列表框设成多选，在javascript里应该怎么得到他被选中的值？
<select name= "test " onclick= "javascript:Select() ">
<option value= "a "> a </option>
<option value= "b "> b </option>
<option value= "c "> c </option>
<option value= "d "> d </option>
</select>
在javascript里面
function Select(){
for(var i=0;i <document.all.test.length;i++)
if(document.all.test[i].checked==true
alert(document.all.test[i])
}
这样就可以拉
<html>
<head>
<title> New Document </title>
<script>
function showSelectedValue()
{
var selectedValue = " ";
var objSelect = document.form1.test;
for(var i = 0; i < objSelect.options.length; i++)
{
if (objSelect.options[i].selected == true)
selectedValue += objSelect.options[i].value + "\r\n ";
}
alert(selectedValue);
}
</script>
</head>
<body>
<form name= "form1 ">
<select name= "test " multiple >
<option value= "a "> a </option>
<option value= "b "> b </option>
<option value= "c "> c </option>
<option value= "d "> d </option>
</select>
<input type= "button " value= "showSelectedValue " onClick= "javascript: {showSelectedValue();} ">
</form>
</body>
</html>