Q. How do you check if a variable is null in JavaScript?

आप कैसे जांचेंगे कि जावास्क्रिप्ट में कोई वेरिएबल शून्य है या नहीं?

A
if (x = null)
B
if (x === null)
C
if (x == undefined)
D
if (x !== null)

Explanation

Explanation will be available soon. Please stay tuned.

व्याख्या जल्द ही उपलब्ध होगी। कृपया बने रहें।

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