Answer & Solution
Answer: Option A
Solution:
Hoisting refers to the mechanism of moving variable and function declarations to the top of their containing scope.
Q
What is hoisting in JavaScript?
Related Questions on Average
Can function-scoped variables be accessed from outside their functions?
A). Yes
B). No
C). Only if they are constants
D). Only if they are defined globally
What is the output of console.log(outerVar); outside of outerFunction if var outerVar = 'Outer'; is defined inside outerFunction?
A). Outer
B). undefined
C). Error
D). null
How do you declare a block-scoped variable in ES6?
A). var
B). let
C). const
D). function
What is the output of console.log(blockVar); outside of a block if let blockVar = 'Block'; is defined inside a block?
A). Block
B). undefined
C). Error
D). null
Which of the following demonstrates lexical scoping?
A). Closure
B). Hoisting
C). Global scope
D). Local scope
What is block scope in JavaScript?
A). Variables scoped to a block
B). Variables scoped to a function
C). Variables scoped globally
D). Variables scoped locally
What is the difference between let and var in terms of function scope?
A). let is block-scoped, var is function-scoped
B). let is function-scoped, var is block-scoped
C). They are both block-scoped
D). They are both function-scoped
What is the benefit of block scope in JavaScript?
A). It reduces variable conflicts
B). It increases global scope
C). It simplifies variable declarations
D). It makes variables inaccessible
How do you declare a function-scoped variable using ES6?
A). var
B). let
C). const
D). function
What is the output of console.log(innerVar); outside of exampleFunction if var innerVar = 'Hello'; is defined inside exampleFunction?
A). Hello
B). undefined
C). Error
D). null