easyui 重复提交如何解决

Question

    js代码 
    $('#btn_add').click(function(){
        proper.dialogForm({
            title:'增加商品',
            width:350,
            height:420,
            maximized:true,
            commitURL:'<%=basePath %>allfields/allfieldsProductInfoQly/addProduct.do',
            href:'<%=basePath%>allfields/allfieldsProductInfoQly/addForm.do',
            commitSuccess:function(resp){
                $.messager.alert('系统消息',resp);
                $("#tablegrid").datagrid( "reload");
            }
        });
    });

Answer 1

用jquery ajax异步提交，提交后再刷新页面也不会提交表单