<script language="javascript">
function chk(){
var obj = document.getElementById("sel");
var strsel = obj.options[obj.selectedIndex].text;
if (confirm("確定要選擇"+strsel+"嗎？")){
}else{
} } </script> <select name="sel" οnchange="return chk()"> <option value=1>a001</option> <option value=2>a002</option> <option value=3>a003</option> </select>
如果是取數值進行計算時：
function chk(){ var number1 = document.getElementById("n1").value; var number2 = document.getElementById("n2").value; var number3 = document.getElementById("n3").value; var number4 = document.getElementById("n4").value; var number5 = document.getElementById("n5").value; var number6 = document.getElementById("n6").value; var average =(parseInt(number1)+parseInt(number2)+parseInt(number3)+parseInt(number4)+parseInt(number5))*0.5+parseInt(number6)*0.1 if (confirm("確定要選擇"+average+"嗎？")){
}else{
} } </script>
