范文 |
本文实例讲述了js显示下拉列表框内全部元素的方法。分享给大家供大家参考。具体如下: 下面的js代码可以通过alert框显示指定下拉列表的全部元素 <!doctype html> <html> <head> <script> function getoptions() { var x=document.getelementbyid(myselect); var txt=all options: ; var i; for (i=0;i<x.length;i++) { txt=txt + \n + x.options[i].text; } alert(txt); } </script> </head> <body> <form> select your favorite fruit: <select id=myselect> <option>apple</option> <option>orange</option> <option>pineapple</option> <option>banana</option> </select> <br><br> <input type=button onclick=getoptions() value=output all options> </form> </body> </html>
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