function displayResult(){ var x=document.getElementById("mySelect").selectedIndex; var y=document.getElementById("mySelect").options; alert("索引: " + y[x].index + " is " + y[x].text); } </script> </head> <body> <form> 选择你最喜欢的水果: <select id="mySelect"> <option>Apple</option> <option>Orange</option> <option>Pineapple</option> <option>Banana</option> </select>
原文：http://www.cnblogs.com/huangxingyuan/p/6395710.html