Answer & Solution
Answer: Option A
Solution:
The push method adds the element 'yellow' to the colors array, resulting in ['red', 'blue', 'green', 'yellow'] being logged to the console.
Q
What will be logged to the console after executing the code above?
Related Questions on Average
What does the const keyword signify in JavaScript?
A). Constant variable
B). Mutable variable
C). Global variable
D). Block-scoped variable
What happens if you try to reassign a value to a constant declared using const?
A). SyntaxError
B). TypeError
C). ReferenceError
D). No error, value is reassigned
Which keyword is used to declare block-scoped variables in JavaScript?
A). var
B). let
C). const
D). block
Which of the following best describes the behavior of JavaScript's const keyword?
A). It prevents variables from being redeclared
B). It ensures variables cannot be reassigned
C). It provides global scope for variables
D). It allows variables to change their data type
Which of the following is NOT an example of a block in JavaScript?
A). Function body
B). if statement body
C). while loop body
D). Object literal
What will be the output of the code above?
A). 30
B). 31
C). TypeError
D). Undefined
What happens if you try to declare a const variable without initializing it immediately?
A). SyntaxError
B). ReferenceError
C). TypeError
D). No error, the variable remains undefined
What will be the output of the code above?
A). 30
B). 31
C). Error
D). Undefined
What is the benefit of using const over var in JavaScript?
A). const variables have function scope
B). const variables are hoisted to the top
C). const variables prevent accidental reassignments
D). const variables can be used anywhere
Which of the following statements is true about constants declared using const?
A). They can be reassigned multiple times
B). They are hoisted to the top
C). They are mutable
D). They are immutable