Javascript string stored on stack

Question

I am reading Professional JavaScript for web developers 3rd ed. , and in the summary of chapter 4 you can read:

Two types of values ​​can be stored in JavaScript variables: primitive values ​​and reference values. Primitive values ​​have one of five primitive data types: Undefined, Null, Boolean, Number, and String. Primitive and reference values ​​have the following characteristics:

• Primitive values ​​have a fixed size and therefore are stored in memory on the stack.

But I can have different lines, say:

var a = "ABC";

//or

var b = "Some very annoyingly long string ..."

They obviously vary in size, so how can they be allocated on the stack?

I believe that the same question can be asked by numbers ...

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Answer 1

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Answer 2

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