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js的动态变化

清淡的茶 发布于 2009-09-14 16:02, 503 次点击
请高手帮忙解决下啊。
<html>
<head>
      <script>
        function showpic(){
            var val =document.all.photopic.value;
                                            
            if(val==4){
            document.getElementById("ppic").src="'http://photo.'";
                                    }
                                        }
    </script>        
</head>
<body>
    <table border="0" cellpadding="0" cellspacing="0" class="font">
                      <tr>
                          <td>
                          请选择查看论坛板块名:
                           <select name="photopic" onChange="showpic();">
                           <option >--请选择--</option>
                           <option value="4">人像</option>
                           <option value="5">风景,旅游</option>
                     <option value="6">微距</option>
                             <option value="45">生态</option>
                          <option value="7">商业</option>
                       <option value="8">纪实</option>
                      <option value="9">建筑</option>
                   <option value="69">其他</option>
                      <option value="64">香格里拉专区</option>
                     </select><br><br>
         <div id="show">                                          
         <script id="ppic" language="JavaScript" src="http://photo.
            </div>                                       
                                                </td>
                                            </tr>
                                          
                                        </table>
</body>
</html>
我想改变div中的srcript的调用。我每个板块都有个js调用。我如何实现js的更新。
2 回复
#2
gdy03492009-09-16 20:34
你这样写肯定不行啊,我看了下你上面写的根本就不会刷新页面,如果人为刷的话就又回到原来的状态了。
我在你的基础了改了一下,你看看
#3
gdy03492009-09-16 20:34
<html>
<head>
      <script>
          function showpic() {
              var val = document.all.photopic.value;
              if (val == 4) {
                  var show1 = document.getElementById("show");
                  var oHttpReq = new ActiveXObject("MSXML2.XMLHTTP.3.0");
                  oHttpReq.open("post", "http://photo., false);
                  oHttpReq.send("");
                  var result = oHttpReq.responseText.replace("document.write('", "").replace("');", "");
                  result = result.toString().replace(/\\/g, "");
                  show1.innerHTML = result;
              }
          }
    </script>         
</head>
<body>
<table border="0" cellpadding="0" cellspacing="0" class="font">
  <tr>
    <td> 请选择查看论坛板块名:
      <select name="photopic" onChange="showpic();">
          <option >--请选择--</option>
          <option value="4">人像</option>
          <option value="5">风景,旅游</option>
          <option value="6">微距</option>
          <option value="45">生态</option>
          <option value="7">商业</option>
          <option value="8">纪实</option>
          <option value="9">建筑</option>
          <option value="69">其他</option>
          <option value="64">香格里拉专区</option>
        </select>
      <br>
      <br>
        <div  id="show">
          <script id="ppic" language="JavaScript" src="http://photo.
      </div ></td>
  </tr>
</table>
</body>
</html>
1