Programming · Flashcard
What is the difference between == and ===?
- A=== compares value and type with no coercion; == coerces types first
- B== compares value and type strictly; === also compares the memory address
- C=== works only on numbers, while == works on all other data types
- D== and === are identical; the extra sign is only a style preference
Why this is the answer
=== checks value and type with no coercion, while == coerces types first (0 == "0" is true, 0 === "0" is false). It's not reversed, neither compares memory addresses, === isn't limited to numbers, and the two aren't interchangeable.
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