XMLDocument转成字符串［javascript］

在ajax获取xml信息时，返回的数据类型是XMLDocument，在程序调试时经常要看此对象的内容。此时，可用如下代码获取XMLDocument的字符串形式，并进行显示。

function XMLtoString(elem){
    var serialized;
    try {
        // XMLSerializer exists in current Mozilla browsers                                                                            
        serializer = new XMLSerializer();                                                                                              
        serialized = serializer.serializeToString(elem);                                                                               
    }                                                                                                                                  
    catch (e) {
        // Internet Explorer has a different approach to serializing XML                                                               
        serialized = elem.xml;                                                                                                         
    }    
    return serialized;                                                                                                                 
}