Answer & Solution
Answer: Option C
Solution:
Hoisting is the behavior where variable and function declarations are moved to the top of their containing scope during the compile phase.
Q
What is hoisting in JavaScript?
Related Questions on Average
What will be the output of the following code?
console.log(a); var a = 10;
A). 10
B). undefined
C). Error
D). null
Which of the following is NOT a valid variable name in JavaScript?
A). myVar
B). $myVar
C). _myVar
D). 123myVar
What will be the output of the following code?
let x; console.log(x);
A). null
B). undefined
C). 0
D). NaN
Which statement is true about variables in JavaScript?
A). They must be declared before use
B). They can only hold numbers
C). They are statically typed
D). They are strongly typed
What is the correct syntax for declaring a variable in JavaScript?
A). let myVar = 5;
B). myVar let = 5;
C). 5 = let myVar;
D). let = myVar 5;
What will be the output of the following code?
var x = 5; var y = 6; var z = x + y;
A). 11
B). 11
C). 5
D). 6
Which of the following is a valid variable name in JavaScript?
A). 2name
B). _name
C). #name
D).
What will be the output of the following code?
const a = 10; a = 20; console.log(a);
A). 10
B). 20
C). Error
D). undefined
Can variables declared with 'var' be redeclared in the same scope?
A). Yes
B). No
C). Only inside a function
D). Only inside a loop
Which keyword is used to declare a variable in JavaScript?
A). var
B). let
C). const
D). All of the above