回应没有收音机 - 阿贾克斯

Question

<form id="attack_poll">
Attack 1:<input type="radio" id="attack_select" name="attack_select" value="10" /><br>
Attack 2:<input type="radio" id="attack_select" name="attack_select" value="20" /><br>
Attack 3:<input type="radio" id="attack_select" name="attack_select" value="30" /><br>
<input type="submit" id="submit" value="Submit" />
</form>

<div id="result"> </div>

<script type="text/javascript">
$("#submit").click(function(){ 

    $.ajax( {
      type: "POST",
      url: "battlephp.php",
      data: $('#attack_poll'),
      success: function(data) 
      {
          $('#result').html(data)
    }
    });

});
</script>

我没有收到回复？我在ajax中遗漏了什么？

而且我也使用POST方法..但仍然可以在url中看到参数或值：

http://localhost/battlehtml.php?attack_select=20

PHP代码：

$attack = $_POST['attack_select'];
echo $attack;