我会推荐这种JavaScript或流解析器的基于SAX的解析器。

I would recommend a SAX based parser for these kind of JavaScript or a stream parser.

DOM解析会将整个内容加载到内存中，这不是大文件的方法就像你提到的那样。

DOM parsing would load the whole thing in memory and this is not the way to go by for large files like you mentioned.

对于基于Javascript的SAX解析（XML格式）你可以参考
https://code.google.com/p/jssaxparser/

和

对于JSON 您可以编写自己的，以下链接演示如何在Javascript
中编写一个基于SAX的基本解析器 http://ajaxian.com/ archives / javascript-sax-based-parser

for JSON you might write your own, the following link demonstrates how to write a basic SAX based parser in Javascript http://ajaxian.com/archives/javascript-sax-based-parser