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>