jQuery 找不到自定义属性

Question

jQuery 在下拉菜单上找不到我的自定义属性，我有一个类似的属性，上面只有一行，效果很好，但这一直给我一个未定义的属性。

jQuery

$('#admin_student_school_select').change('click',function(){
var school_student = $(this+':selected').attr('school_student');
$('#admin_student_content_details')
  .html(ajax_load)
  .load(loadUrl,"form_being_submitted=admin_page_list_student&school="+school_student);
});

HTML

<select id="admin_student_school_select">
    <option>Select a School</option>
    <option school_student="1">Riverside Community College</option>
    <option school_student="2">Victor Valley College</option>
    <option school_student="3">Cal State San Bernardino</option>
    <option school_student="4">Craffton College</option>
    <option school_student="5">San Bernardino Community</option>
</select>

ajax 调用背后的脚本有效。我已经回显了结果。

Answer 1

该行无效:

$('#admin_student_school_select').change('click',function(){

它是什么，点击还是更改事件？!

<小时/>

更新:

$(this+':selected') 不是有效的选择器...使用这个:

var school_student = $(':selected', this).attr('school_student');