HTML中的下拉列表

<html> <head> <script type="text/javascript"> function alertIndex()   {   var x=document.getElementById("mySelect").selectedIndex;   var y=document.getElementsByTagName("option");   alert(y[x].text + " has the index of: " + y[x].index);   } </script> </head> <body> <form> 请选择您喜欢的水果: <select id="mySelect">   <option>苹果</option>   <option>桃子</option>   <option>香蕉</option>   <option>桔子</option> </select> <br /> <br /> <input type="button" onclick="alertIndex()" value="显示被选水果的 index"> </form> </body> </html>
相关文章
相关标签/搜索