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Numbers in JavaScript occupy 64 bits of memory, that is, 64 bits; numbers in JavaScript are stored as double-precision floating point numbers, and double-precision floating point numbers occupy 8 bytes of memory, that is, 64 bits.

Operating environment of this tutorial: Windows 10 system, Javascript version 1.8.5, Dell G3 computer.

How many digits in JavaScript?

Let's start with the number type number

"JavaScript number types represent numbers as 64-bit floating-point numbers defined by IEEE754"

Note: number memory space ratio is not differentiated by specific types (Java is differentiated). integer types (byte, short, int, long) and floating point types (float, double)

Thus, for numbers only, the memory in the computer is 8 bytes.

1byte = 8bit

8 bytes = 64 bits

Extend other data types

JavaScript basic data type is 8 bytes in computer memory

Basic data types: string, number, undefined, boolean, null

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