If we have an object r and want to know if it is a Range object, we can write ______________

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If we have an object r and want to know if it is a Range object, we can write ______________

asked Oct 21, 2021 in Education by JackTerrance

If we have an object r and want to know if it is a Range object, we can write ______________ (a) r typeof Range (b) r is Range (c) r equals Range (d) r instanceof Range This question was posed to me during an interview. I want to ask this question from Comparison of Core JavaScript versus Frameworks topic in division Caching, Debugging and Animation of JavaScript Select the correct answer from above options JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

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JackTerrance · Answer 1 · 2021-10-21T15:22:00+0000

The correct answer is (d) r instanceof Range Explanation: To know the range object r instanceof range is used. The r instanceof Range returns true if r inherits from Range.prototype. The instanceof operator does not actually check whether r was initialized by the Range constructor.