javascript中选单互动

http://go2aspcool.51.net/club/replan.php?boardid=1&planid=7101

解决方案 »

  1.   

    <html><head><script>
    function check()
    {
      if(f1.d1.options[0].selected)
      {
         f1.d2.length=0     f1.d2.options.add(new Option("教师1","教师1"))
         f1.d2.options.add(new Option("教师2","教师2"))
      
      }
      else if(f1.d1.options[1].selected)
      {
         f1.d2.length=0
         f1.d2.options.add(new Option("学生1","学生1"))
         f1.d2.options.add(new Option("学生2","学生2"))  }}
    </script>
    </head><body><form name="f1" method="POST" action="--WEBBOT-SELF--">
      
      <p><select size="1" name="d1" onchange="check()">
        <option>教师</option>
        <option>学生</option>
      </select><select size="1" name="d2">
      </select></p>
    </form></body></html>