高分奉送，select标签指定了multiple属性，用javascript怎样得到所选的每一项呢？

[chui88]

如题

[孟子E章]

for(i=0;i<selectName.options.length;i++)
{
if(selectName.options[i].selected) alert(selectName.options[i].value)
}

[搞搞儿的]

if (mySelect.options[i].selected == true) {......}

[孟子E章]

<select name=a id=a multiple>
<option value="a">a
<option value="b">b
<option value="c">c
<option value="d">d
<option value="e">e
</select>
<input type=button onclick="b()">
<script>
function b()
{
for(i=0;i<a.options.length;i++)
{
if(a.options[i].selected) alert(a.options[i].value)
}
}
</script>