Data Types in TypeScript

Data Types represent different types of values supported by a language. This will check if a value is valid or not before assigning it to a variable. This ensures the behavior of the code.

Any Type

The any data type is the super data type of all the data types in TypeScript. It denotes a dynamic type. We can assign any type of value in this type of variable. We use this data type when we want to opt out of type checking for a variable.

Built-In Data Types

Data Type	Keyword	Description
Number	number	It can be both integer and fraction value
String	string	Unicode character values
Boolean	boolean	logical values, true or false
Void	void	used as functions return types when we do not want to return anything
Null	null	leave the variable blank and not assign any value to it
Undefined	undefined	denotes value given to all uninitialized variables.

There is a difference between null and undefined. They cannot only be used to assign values to the variables. A variable initialized with undefined means that the variable has no value or object assigned to it while null means that the variable has been set to an object whose value is undefined.

User-Defined Data Types

These includes Enums, classes, interfaces, arrays and tuples.