<script type="text/javascript"> function a(object){ alert(object); } </script> [b]<!-- 获取显示的值 --> [/b]<select onchange="a(this.options[this.selectedIndex].innerText);"> <option value="value-a">text-a</option> <option value="value-b">text-b</option> </select> [b]<!-- 获取value的值 --> [/b]<select onchange="a(this.options[this.selectedIndex].value);"> <option value="value-c">text-c</option> <option value="value-d">text-d</option> </select> function isSelect(selectPress) {             //var select = document.getElementById("mySelect").ind;             var selectValue = selectPress.options[selectPress.selectedIndex].value; //显示value 下标0、1、2             var selectValue2 = selectPress.options[selectPress.selectedIndex].innerText; //显示显示的值 具体内容(上海、北京)             //alert(selectValue);             //alert(selectValue2);             if (selectValue == "-1") {                 alert("请选择城市，表单提交被拒绝！")                 return;             }             else {                 document.getElementById('form1').submit(); //form表单提交             }         } <select onchange="isSelect(this);" id="mySelect">         <option value="-1">--请选择--</option>         <option value="0">北京</option>         <option value="1">上海</option>         <option value="2">武汉</option> </select>