js 级联菜单例子

最新推荐文章于 2023-11-17 10:09:20 发布

原创最新推荐文章于 2023-11-17 10:09:20 发布 · 3k 阅读

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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>test javascript</title>

<script type="text/javascript">
   var provinceArray = new Array("山东省","山西省","四川省");
   var city4shandong = new Array("济南","聊城","菏泽","滨州","长清","","临沂","济宁","枣庄","商河","日照","曲阜","东营","滕州","烟台","威海","沂蒙","临朐","临清","潍坊");
   var city4shanxi = new Array("太原","大同","高平","长治","侯马","孝义","晋城");
   var city4sichuan = new Array("成都","攀枝花","自贡","泸州","德阳","绵阳","广元","遂宁","乐山","南充","眉山","宜宾","广安","达州","雅安","巴中","资阳","阿坝","甘孜","凉山");

   function initProvince(){
    for(var i=0; i<provinceArray.length; i++){
     var optionObj = document.createElement("OPTION");
     optionObj.value = provinceArray[i];
     optionObj.text = provinceArray[i];
     document.getElementById("ddlProvince").options.add(optionObj);
    }
   }

   function initCity(provinceName){
     if(provinceName=="山东省"){
      clearAllCitys();
      for(var i=0; i<city4shandong.length; i++){
       var optionObj = document.createElement("OPTION");
       optionObj.value = city4shandong[i];
       optionObj.text = city4shandong[i];
       document.getElementById("ddlCtiy").options.add(optionObj);
         }
     }
     else if(provinceName=="山西省"){
      clearAllCitys();
      for(var i=0; i<city4shanxi.length; i++){
       var optionObj = document.createElement("OPTION");
       optionObj.value = city4shanxi[i];
       optionObj.text = city4shanxi[i];
       document.getElementById("ddlCtiy").options.add(optionObj);
      }
     }
     else if(provinceName=="四川省"){
      clearAllCitys();
      for(var i=0; i<city4sichuan.length; i++){
       var optionObj = document.createElement("OPTION");
       optionObj.value = city4sichuan[i];
       optionObj.text = city4sichuan[i];
       document.getElementById("ddlCtiy").options.add(optionObj);
      }
     }
   }
   function clearAllCitys(){
   var optionArray=document.getElementById("ddlCtiy").options;
    for(var i=1;i<optionArray.length;){
     optionArray.remove(i);
    }
   }
  </script>
</head>
<body onload="initProvince()">
  <table>
   <tr>
    <td>province:</td>
   <td>
    <select id="ddlProvince" onChange="initCity(this.value)">
     <option vlue="choose">choose</option>
    </select>
   </td>
   </tr>
   <tr>
    <td>city:</td>
   <td>
    <select id="ddlCtiy">
     <option vlue="choose">choose</option>
    </select>
   </td>
   </tr>
  </table>
</body>
</html>

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