Consider the following example:
In the example given above,
both user1 and user2
store the same key-value pairs -
{ name: "Sam" }.
But they are not equal.
This is because:
-
const user1 = { name: "Sam" }
stores { name: "Sam" } in
a memory location
and
assigns the address of that
memory location to user1.
-
const user2 = { name: "Sam" }
stores { name: "Sam" } in
a different memory location
and
assigns the address of that
memory location to user2.
-
So the address stored in user1
is different from
the address stored in user2.
That is why user1 === user2 is false.
Now, look at this example:
In the example given above,
the variables user1 and user2
hold the address to the same memory location.
So, when we compare them,
we have the same address
in both the variables.
This is why user1 === user2 is true.