Final answer:
The output of the code is 456. The variables a, b, and c are defined as objects with different key-value pairs. When assigning values to a[b] and a[c], the square brackets represent property names and a[b] is overwritten by a[c].
Step-by-step explanation:
The output of the code is 456.
In this code, the variables
a
,
b
, and
c
are defined as objects. They have different key-value pairs, with
b
having the value
'b'
and
c
having the value
'c'
.
When assigning values to
a[b]
and
a[c]
, the square brackets represent the property name of the object. Since
b
and
c
are both objects, they will be coerced to strings before being used as property names. As a result,
a[b]
and
a[c]
will both refer to the same property
[object Object]
in object
a
. Therefore, the value of
a[b]
is overwritten by
a[c]
to become
456