复制代码 代码如下:

<script type="text/javascript">

function GetValue() {

var strlist = document.getElementById("ListBox1");//获取Listbox

var str= "";

//遍历Listbox，取得选中项的值

if (strlist.options.length > 0) {

for (var i = 0; i < strlist.options.length; i++) {

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

var j = strlist.options[i].value;

str+=j+","; //把Value值串起来

}

}

var strValue=str.replace(/,$/, ""); //去掉最后一个逗号

alert(strValue);

}

else {

alert("No Item in Listbox");

}

}

</script>