Html, Css, Js

1. What will be the output of the following code snippet?

• 10

• 20

• undefined

• Error

3. What is the output of the following code?

• 22

• 21

• 23

• NAN

4. What is the purpose of the querySelectorAll method in JavaScript?

• It selects the first element that matches a specified CSS selector.

• It selects all elements that match a specified CSS selector.

• It selects the parent element of a specified element.

• It selects the next sibling element of a specified element.

8. Which symbol is used for single-line comments in JavaScript?

• //

• /* */

• #

• --

2. Which of the following is not a JavaScript data type?

• String

• Boolean

• Float

• Number

1. How do you define a function in JavaScript?

• def function_name():

• function function_name():

• func function_name():

• function function_name() { }

2. What is the purpose of the return statement in a function?

• It terminates the execution of the function.

• It specifies the value to be passed back as the result of the function

• It defines the input parameters for the function.

• It assigns a value to a variable inside the function.

Which property is used to change the font of an element?

• font-style

• font-family

• font-color

• none

Which of the following is a component of CSS style rule?

• Selector

• Property

• Value

• All of the Above

1. How do you create an empty object in JavaScript?

• var obj = {};

• var obj = new Object();

• var obj = Object.create();

• var obj = Object();