Support for isJSONObject and isJSONString

[knott11]

Hello @raon0211, if you need these two functions, I can add them to the predicate library.

[raon0211]

Hello, what is the behavior of the functions you're thinking of? We have some similar functions like isPlainObject, etc.

[knott11]

Hello, what is the behavior of the functions you're thinking of? We have some similar functions like isPlainObject, etc.

I think 'isJSONObject' is used to check whether an object contains elements such as object, array, number, string, boolean, or null, and whether it is to a valid JSON format.'isJSONString' is used to check whether the data can be converted into a JSON object.

[raon0211]

I think both might be helpful. Could you give it a try?

[SHINMH]

Would it be okay if I try?

[knott11]

Would it be okay if I try?

'isJSONObject' has been merged,'isJSONString' seems not, hello @raon0211 can he try it?

[knott11]

Would it be okay if I try?

I think 'isJSONString' might not be ok,and closed the merge request,maybe you can try it.