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我通过谷歌找到了一些我可以使用的代码，应该更正它以适合我，但是当我从下拉菜单中选择一些东西时，什么也没有发生。不知道我做错了什么。

<select name="h1" id="h1">
            <?php


            echo "<option value=".$rowlift['H1'].">".$rowlift['H1']."</option>";
                $pris = mysql_query("SELECT * FROM priser ORDER BY id ASC");

            while($rowP = mysql_fetch_assoc($pris))

                echo "<option value='".$rowP['pris'].",".$rowP['id']."'>".$rowP['hojde']. "</option>";
            ?>
        </select>

<?php
            if($rowlift['p1'] != '')
                echo "<input type='text' id='pris1' name='p1' value='".$rowlift['p1']."'>";
            else
                echo "<input type='text' id='pris1' name='p1'>"
            ?>


     <script type="text/javascript">
    var mytextbox = document.getElementById('pris1');
    var mydropdown = document.getElementById('h1');

    var mySplitResult = mydropdown.split(",");

    mydropdown.onchange = function(){
           mytextbox.value = mySplitResult[0];
    }
    </script>

我希望这是您正在寻找的想法..当我选择某些东西时，什么也没有发生。

    <select name="h1" id="h1">
      <option value=""></option>
      <option value="80,1">1000m</option>
      <option value="90,2">1200m</option>
      <option value="100,3">1500m</option>
      <option value="110,4">2000m</option>
      <option value="120,5">2250m</option>
      <option value="130,6">2500m</option>
      <option value="140,7">3000m</option>
      <option value="150,8">3500m</option>
      <option value="160,9">4000m</option>
      <option value="160,10">Elev man.</option>
      <option value="160,11">Elev auto</option>
      <option value="0,12">HM</option>
      <option value="2000,13">Tandem pass u/video</option>
      <option value="2300,14">Tandem håndhold video</option>
      <option value="2600,15">Tandem pass m/video</option>
      <option value="0,16">Tandem master</option>
      <option value="-100,17">Tandem video</option>
    </select>
   <td>
            <input type="text" id="pris1" name="p1">        <script type="text/javascript">
            var dropdownId = document.getElementById("h1");
            var mytextbox = document.getElementById('pris1');

            var mySplitResult = strUser .split(",");

        dropdownId.onchange = function(){
               mytextbox.value = mySplitResult[1] //to (not) appened
             //mytextbox.innerHTML = this.value;
        }
        </script>

            </td>
4

3 回答 3

1

我认为应该是mydropdown.value.split(',');

于 2013-03-04T14:26:03.890 回答
0

应该是这样的.. :D 

  <select name="sel1" id="sel1" onchange ="show()" >
          <option value="">Choose .....</option>
          <option value="80~1">1000m</option>
          <option value="90~2">1200m</option>
          <option value="100~3">1500m</option>
          <option value="110~4">2000m</option>
          <option value="120~5">2250m</option>
          <option value="130~6">2500m</option>
          <option value="140~7">3000m</option>
          <option value="150~8">3500m</option>
          <option value="160~9">4000m</option>
          <option value="160~10">Elev man.</option>
          <option value="160~11">Elev auto</option>
          <option value="0~12">HM</option>
          <option value="2000~3">Tandem pass u/video</option>
          <option value="2300~14">Tandem håndhold video</option>
          <option value="2600~15">Tandem pass m/video</option>
          <option value="0~16">Tandem master</option>
          <option value="-100~17">Tandem video</option>
        </select>
       <td>
    <input type="text" id="pris1" name="pris1">      

    <script type="text/javascript">

    function show() {
    var dropdownId = document.getElementById("sel1").value;
    var mytextbox = document.getElementById('pris1');
    var mySplitResult = dropdownId .split("~");
    mytextbox.value = mySplitResult[0];
    }

    </script>
于 2013-03-05T11:45:05.863 回答
0 
var dropdownId = document.getElementById("yourdropdownId");
var strUser = dropdownId .options[dropdownId .selectedIndex].value;

var mySplitResult = strUser .split(",");

将上面的代码包装在 onchange() 中

于 2013-03-04T14:29:05.777 回答