📄 13-7.htm

📁 这是一些关于JavaScript的学习资料希望对大家有用

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<html>
<head>
<script language="javascript">
 function lisongtao()
    {
          var orderstring=""
           var n=document.dinner.entries.length          
                for(i=0;i<n;++i)
                  {       
                        if(document.dinner.entries.options[i].selected)
                           {
                                orderstring=document.dinner.entries.options[i].value
                           }
                 }
                document.dinner.summary.value=orderstring
     }       
</script>
</head>
<body>
     <form name="dinner">
<select name="entries" size="4"  onchange="lisongtao()">
      <option value="HOT DOG"> hot dog </option>
      <option value="chicken sandwich">chicken sandwich</option>
      <option value="frenck fries">frenck fries</option>
      <option value="Onion rings">onion rings</option>
      <option value="milk shake">milk shake </option>
</select>
<textarea name="summary" rows="4" cols="40"></textarea>
</form>
</body>
</html>

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