Basic use of JSON data

I've always wanted to do a data type of JSON, through the use of these days, it is found that JSON is only a data format, and the int string double and so on data types are essentially different.

Just like the first high school textbooks, want to master the same new technology, new knowledge, we must first grasp its significance, that is, its existence value.

Through the recent use, I think JSON is widely used, and the importance of JS is not related to the promotion. JS does not have the same background code, you can define the model, and then through the "Object name. Property name" To get a value. The advent of JSON solves this problem. If we define an object in JSON format, then we can use the object name. Key name to get past the data.

I divide the use of JSON into two parts

1. Convert other data types to JSON

2. Convert JSON to other data types