jQuery动态添加、删除元素的方法

<script> 
$.schoolFn = { 
addItem: function(obj){ 
$("#itemList").append("<li id='liItrm' class='list-group-item clearfix'><span class='glyphicon glyphicon-resize-vertical sort-handle'></span>"+obj+"<input type='hidden' name='audiences' value='"+obj+"'><button type='button' class='close delete-btn deleteItem' onclick='deleteItem(this);' title='删除'>×</button></li>"); 
}, removeItem: function(obj){ 
$("#"+obj).replaceWith(""); 
} 
} 
$("#itemAdd").click(function(){ 
var item=$('#teacherInput').val(); 
$.schoolFn.addItem(item); 
$('#teacherInput').val(""); 
}); 
function deleteItem(obj){ 
var item=$(obj).parents(".list-group-item").attr("id"); 
$.schoolFn.removeItem(item); 
} 
</script>