Q. Consider the following code snippet
var a1 = [,,,];
var a2 = new Array(3);
0 in a1
0 in a2
The result would be

  • (A) true false
  • (B) false true
  • (C) true true
  • (D) false true
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✅ Correct Answer: (A) true false
Explanation: a1 has an element with index 0 and a2 has no element with index 0.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:50 pm in JavaScript

Explanation by: Mr. Dubey
a1 has an element with index 0 and a2 has no element with index 0.

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