下拉值没有变化 | 下拉值没有变化

本文介绍了下拉值没有变化的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述

 <  ！DOCTYPE     html     PUBLIC    -//W3C//DTD     XHTML     1.0    过渡//EN"    " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" > 
<   html     xmlns   ="   http://www.w3.org/1999/xhtml" > 
<  头部 > 
<  元    http-equiv   ="   Content-Type"   内容  ="  text/html; charset = iso-8859-1"   / > 
<  标题 > 无标题文档<  /title  > 
<  脚本   类型  ="  文本/javascript" > 
函数doClick(objRad){
如果(objRad.value =="rent"){
document.getElementById("rent").style.display ='block';
document.getElementById("buymin").style.display ='none';
document.getElementById("buymax").style.display ='none'; //显示其他选项
}

}
<  /script  > 
<  /head  > 

<  正文 > 

          <  输入     ="  radio"    名称  ="   rad"   值  =" 购买"    onclick   ="   doClick(this);"   >  <   b   >  BUY <  /b  > 
                 <  输入     ="  radio"    名称  ="   rad"   值  ="  RENT"    onclick   ="   doClick(this);"   >  <   b   >  RENT <  /b  > 

         <   p  > 预算<  /p  > 
        <  选择   类  ="   min"      id   ="  购买" > 
          <  选项   >  Min <  /option  > 
          <  选项 >  5Lakhs <  /option  > 
          <  选项 >  10Lakhs <  /option  > 
          <  选项 >  20Lakhs <  /option  > 
          <  选项 >  25Lakhs <  /option  > 
          <  选项 >  30Lakhs <  /option  > 
           <  选项 >  35Lakhs <  /option  > 
          <  选项 >  40Lakhs <  /option  > 
          <  选项 >  45Lakhs <  /option  > 
          <  选项 >  50Lakhs <  /option  > 
        <  /select  > 
        <   span      ="  position:relative; top:6px; left:10px; color: #FFFFFF" >  To <   /span  > 
            <  选择    id   ="   buymax"  class   ="   max" " >> ; 
          <  选项 >  Max <  /option  > 
          <  选项 >  10Lakhs <  /option  > 
        <  选项 >  30Lakhs <  /option  > 
        <  选项 >  40Lakhs <  /option  > 
          <  选项 >  50Lakhs <  /option  > 
          <  选项 >  60Lakhs <  /option  > 
         <  选项 >  70Lakhs <  /option  > 
          <  选项 >  80Lakhs <  /option  > 
          <  选项 >  90Lakhs <  /option  > 
          <  选项 >  1crore <  /option  > 
        <  /select  > 


<  选择    id   ="   rent"   样式  ="  显示:无"   类  ="  最小" > 
<  选项   >  MinRent <  /option  > 
          <  选项 >  5000 <  /option  > 
          <  选项 >  8000 <  /option  > 
          <  选项 >  10000 <  /option  > 
          <  选项 >  15000 <  /option  > 
          <  选项 >  20000 <  /option  > 
           <  选项 >  30000 <  /option  > 
          <  选项 >  35000 <  /option  > 
          <  选项 >  45000 <  /option  > 
          <  选项 >  50000 <  /option  > 
          <  选项 >  60000 <  /option  > 
           <  选项 >  1Lakh <  /option  > 
        <  /select  > 
               <   span      ="  position:relative; top:6px; left:10px; color: #FFFFFF" >  To <   /span  > 
       <  选择    id   ="   rent"   样式  ="  显示:无"   类  ="  最大值" > 
          <  选项 >  MaxRent <  /option  > 
          <  选项 >  10000 <  /option  > 
          <  选项 >  15000 <  /option  > 
          <  选项 >  20000 <  /option  > 
          <  选项 >  25000 <  /option  > 
          <  选项 >  30000 <  /option  > 
          <  选项 >  35000 <  /option  > 
          <  选项 >  45000 <  /option  > 
          <  选项 >  50000 <  /option  > 
          <  选项 >  1 Lakh <  /option  > 
           <  选项 >  1Lakh + <  /option  > 
        <  /select  > 

<  /body  > 
<  /html  >  解决方案
 
 
 
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script type="text/javascript">
function doClick(objRad){
if (objRad.value=="rent"){
document.getElementById("rent").style.display='block';
document.getElementById("buymin").style.display='none';
document.getElementById("buymax").style.display='none';  //show other options
}

}
</script>
</head>

<body>

          <input type="radio" name="rad" value="BUY" onclick="doClick(this);" ><b>BUY</b>
                 <input type="radio" name="rad" value="RENT" onclick="doClick(this);" ><b>RENT</b>

         <p>Budget</p>
        <select class="min"  id="buymin">
          <option >Min</option>
          <option>5Lakhs</option>
          <option>10Lakhs</option>
          <option>20Lakhs</option>
          <option>25Lakhs</option>
          <option>30Lakhs</option>
           <option>35Lakhs</option>
          <option>40Lakhs</option>
          <option>45Lakhs</option>
          <option>50Lakhs</option>
        </select>
        <span style="position:relative; top:6px; left:10px; color:#FFFFFF">To</span>
            <select id="buymax"class="max">
          <option>Max</option>
          <option>10Lakhs</option>
        <option>30Lakhs</option>
        <option>40Lakhs</option>
          <option>50Lakhs</option>
          <option>60Lakhs</option>
         <option>70Lakhs</option>
          <option>80Lakhs</option>
          <option>90Lakhs</option>
          <option>1crore</option>
        </select>


<select id="rent" style="display:none" class="min">
<option >MinRent</option>
          <option>5000</option>
          <option>8000</option>
          <option>10000</option>
          <option>15000</option>
          <option>20000</option>
           <option>30000</option>
          <option>35000</option>
          <option>45000</option>
          <option>50000</option>
          <option>60000</option>
           <option>1Lakh</option>
        </select>
               <span style="position:relative; top:6px; left:10px; color:#FFFFFF">To</span>
       <select id="rent" style="display:none" class="max">
          <option>MaxRent</option>
          <option>10000</option>
          <option>15000</option>
          <option>20000</option>
          <option>25000</option>
          <option>30000</option>
          <option>35000</option>
          <option>45000</option>
          <option>50000</option>
          <option>1 Lakh</option>
           <option>1Lakh +</option>
        </select>

</body>
</html>
 解决方案 



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