The JSON that came in the background is a string with English letters

Recently helped a friend write something, met a comparison pit backstage, the JSON is a string, and also accompanied by English characters, similar

Callback ({xxx:xxx,xxx;xxx}), I printed a background data format, found a string, so in this reminds you, if you have been in various ways to get out of the JSON things, It is extremely possible that you used the object method on string.

In this return format, my solution is:

It means to pledge something inside the callback and convert it to object.

If you have something wrong, please correct me, learn together, grow together!

The JSON that came in the background is a string with English letters