var aa = $("#hidxml").val();//xml字符串
var cc = "" + aa + "" //这里一定要加前面和后面都要有xml,不然无法解析的
//alert($(cc).find("picture object").length);
$(cc).find("data picture object").each(function () {
var field = $(this);
var fName = field.attr("Name"); //读取节点属性
var dataType = field.children(‘name‘).text(); //读取子节点的值
});