Q
What does the push() method do when used with an array in JavaScript?

Answer & Solution

Answer: Option B
Solution:
The push() method in JavaScript is used to add elements to the end of an array, extending the array's length.
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What is a complex data type in JavaScript?

A). Number

B). Object

C). String

D). Boolean

How do you call a function in JavaScript?

A). Using the execute() method

B). Using the call() method

C). Using the run() method

D). By using the function name followed by parentheses

How do you access a property of an object in JavaScript?

A). Using dot notation (objectName.propertyName)

B). Using square brackets (objectName['propertyName'])

C). Both A and B

D). Neither A nor B

What is the purpose of using arrays in JavaScript?

A). To store a single value

B). To store a collection of values

C). To define object properties

D). To create conditional statements

What is a function in JavaScript?

A). A variable

B). A loop

C). A block of code that performs a specific task

D). An object

Which of the following represents a complex data type in JavaScript?

A). Boolean

B). Undefined

C). Null

D). Array

What is an object in JavaScript?

A). A type of function

B). A collection of key-value pairs

C). A type of array

D). A type of boolean

How do you define a function in JavaScript using a function declaration?

A). function myFunction() { /* code */ }

B). myFunction = function() { /* code */ }

C). myFunction() { /* code */ }

D). myFunction: function() { /* code */ }

Which data type represents a collection of values in JavaScript?

A). Object

B). Array

C). String

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What is the result of typeof [] in JavaScript?

A). object

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