jQuery選擇問題

Question

這裏是我的HTML源代碼：

<ul id="accordion"> 
<li><h3><a id="1"></a></h3></li> 
<li><h3><a id="2"></a></h3></li> 
<li><h3><a id="3"></a></h3></li> 
</ul> 

和JavaScript

<script type="text/javascript"> 
$(document).ready(function(){ 
    $('#accordion li h3').click(function(){ 
    //I want to alert the id attribute of a, but i don't know why 
    //I tried $(this+'a') or $('#accordion li h3:selected a') but it failed. 
    }); 
}); 
</script> 

Answer 1

嘗試

alert($(this).children('a').attr('id'))