1.

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

Answer» 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.


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