用按鈕控制iframe顯示的網頁

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 1 //有兩個按鈕分別響應兩個事件，用來控制iframe顯示的網頁。 2 <script type="text/javascript"> 3     function bd(){ 4         var baidu = document.getElementById("i"); 5         baidu.src = "http://www.baidu.com"; 6     } 7     function xl(){ 8         var sina = document.getElementById("i"); 9         sina.src = "http://www.sina.com.cn";10     }11 </script>12 <style type="text/css">13 #i{14     width:400px;15     height:300px;16 }17 </style>18 </head>19 20 <body>21     <iframe id = "i" scrolling = "no">22     </iframe>23     <div>24         <input type = "button" value  ="百度" onclick = "bd()"/>25         <input type = "button" value  ="新浪" onclick = "xl()"/>26     </div>27 </body>