Question

The reduce and reduceRight methods follow a common operation called __________ (a) filter and fold (b) inject and fold (c) finger and fold (d) fold This question was addressed to me in an internship interview. The question is from Array and Related Methods topic in portion Lexical Structures 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)

Answer 1

Correct choice is (b) inject and fold The explanation: The reduceRight() method reduces the array to a single value. The reduceRight() method executes a provided function for each value of the array (from right-to-left). The return value of the function is stored in an accumulator (result/total). Hence it does the operation of injecting and folding.