Question

js怎样判断文件是否为标准的xml

请问各位大哥大姐们，js怎样判断文件是否为标准的xml。即判断一个xml格式的文件内容是否符合xml标准规范，避免用户将文件后缀改了上传导致异常抛出的情况。谢谢大家！

Answer 1

var isXML = function(elem){
// documentElement is verified for cases where it doesn't yet exist
// (such as loading iframes in IE - #4833)
var documentElement = (elem ? elem.ownerDocument || elem : 0).documentElement;
return documentElement ? documentElement.nodeName !== "HTML" : false;
};

Answer 2

代码问题