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<!DOCTYPE HTML> <html> <head> <meta charset="utf-8" /> <title>php.cn</title> <script> window.onload=function(){ var Form = document.form; Form.city.options[2].text = "合肥"; alert(Form.city.options[2].text); } </script> </head> <body> <form name="form" method="post" action=""> 城市： <select name="city"> <option value="0">北京</option> <option value="1">上海</option> <option value="2">深圳</option> </select> </form> </body> </html>