经过长时间的搜索，终于找到了一个很好的教程

Finally found a good tutorial after ages searching

http://www.touch-code-magazine .com/tutorial-fetch-and-parse-json/

对于任何想要深入了解本教程的人来说，此链接都可以胜任.它很好地解释了代码，因此非常有用.

For anyone who wants a good in-depth tutorial, this link does the job. It explains the code quite well, so very useful.