JavaScript Learning (vi): JavaScript data types

The data types of JavaScript fall into two categories: primitive type (primitive type) and object type.

There are 5 types of primitive type (also simple data type/basic data type): Number, String, Boolean, Null, Undefined.

JavaScript does not support any mechanism for creating custom types, and all values will eventually be the original type or object type.

At first glance, it seems that only these 6 data types are not enough to represent all of the data. However, because JavaScript data types are dynamic, there is no need to define additional data types.

JavaScript Learning (vi): JavaScript data types