any way to get javascript variable memory address?

Question

is there any way to get the memory address of the JavaScript variable , cause when comparing things like [1,2,3] === [1,2,3] which is looks like true but it is false , and also this memory address will help me to understand mutable and immutability of strings too

no, and you never need to .. .looks like true only to the uninitiated :p — Jaromanda X
– Jaromanda X, Commented Jul 6, 2022 at 5:16
Removed all those tags that are irrelevant. (Im)mutability is not explained by memory addresses. Strings are always immutable in JavaScript. — trincot
– trincot, Commented Jul 6, 2022 at 5:21
comparing arrays where all the values are primitives (with the exception of Symbol) can be done... [1, false, 4n, "hello"].toString() === [1, false, 4n, "hello"].toString() — Jaromanda X
– Jaromanda X, Commented Jul 6, 2022 at 5:25
@trincot - aren't all the other primitives immutable too? (Number, Boolean, BigInt, Symbol) — Jaromanda X
– Jaromanda X, Commented Jul 6, 2022 at 5:25
@lucky, but object variables that have the same address can reference a mutable object or not, and object variables that have a different address can reference a mutable object or not. It doesn't relate. It doesn't help to know an object's address to say anything about immutability. — trincot
– trincot, Commented Jul 6, 2022 at 5:31

DTemp S · Accepted Answer · 2022-07-06 05:55:23Z

1

JavaScript itself is meant to be implementation-agnostic, so concepts like memory addresses are intentionally absent from the language itself. Outside of the language, you can use the browser's debugging tools to take a memory snapshot, and that might contain the information. Note, however, that there is no real guarantee that an object will retain its address.

answered Jul 6, 2022 at 5:55

DTemp S

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