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示例
<script language="javascript">function showOptions(){
var someNodeList=$('lstEmployees').getElementsByTagName('option');
var nodes=$A(someNodeList);
nodes.each(function (node){
alert(node.nodeName+': '+node.innerHTML);
});
}
</script>
<selectid="lstEmployees" size="10">
<optionvalue="5">Buchanan,Steven</option>
<optionvalue="8">Callahan,Laura</option>
<optionvalue="1">Davolio,Nancy</option>
</select>
<inputtype="button"value="Show the options"onclick="showOptions();">