Question

The let keyword cannot be used ___________ (a) as a substitute of var (b) as a block statement to define new variables (c) to define variables that are scoped to a single expression (d) in a else if loop, as a substitute for var I have been asked this question in an interview for job. My enquiry is from JavaScript Extensions topic in division Classes and Modules in JavaScript 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

Right option is (d) in a else if loop, as a substitute for var The explanation is: The let keyword can be used in four ways : as a variable declaration like var; in a for or for/in loop, as a substitute for var; as a block statement, to define new variables and explicitly delimit their scope; and to define variables that are scoped to a single expression.