JS 控制select选中项，代码如下：
<html> <script type="text/javascript">var selectedValue = <%= request.getAttribute("line")%>; function changeSelected(){jsSelectItemByValue(document.getElementById("mySelect"),selectedValue);} function jsSelectItemByValue(objSelect,objItemText) {for(var i=0;i<objSelect.options.length;i++) { if(objSelect.options[i].value == objItemText) { objSelect.options[i].selected = true; break; }}} </script><body onload="changeSelected()"><select name="mySelect"> <option value="0">0</option> <option value="1">1</option> <option value="2">2</option> <option value="3">3</option></select> </body> </html>
