Advanced
JavaScript
Q63 / 100
What is realm in JavaScript contexts?
Correct! Well done.
Incorrect.
The correct answer is B) An isolated global environment (its own global object, intrinsics, and code) — iframes and workers run in separate realms
B
Correct Answer
An isolated global environment (its own global object, intrinsics, and code) — iframes and workers run in separate realms
Explanation
Each realm has its own Array, Object, etc. An array from another realm fails instanceof Array in the main realm — use Array.isArray() for cross-realm checks.
Progress
63/100