JavaScript basic Data type

There are five basic data types in the JavaScript language:

Digital

String

Boolean value;

Undefined

Null

Anything that doesn't belong to the base data type belongs to the object.

The data types that can be stored include: positive and negative integers, floating-point numbers, hexadecimal and octal numbers, exponents, and special values Nan, Infinity,-infinity.

A string type stores all the characters between a pair of quotation marks.

Boolean type has only two values: True and False

There is only one value for the null type: null

The undefined type has only one value: undefined

Most of the values are true when converted to a Boolean type, except for the following 6 false values:

“”;

Null

Undefined

0;

NaN;

False.

　　　　

JavaScript basic Data type