Quiz 1 - Web Technology 2023-24 odd

Arrays in JavaScript are defined by which of the following statements?

• It is an ordered list of values

• It is an ordered list of objects

• It is an ordered list of string

• It is an ordered list of functions

What will be the output of the following JavaScript code snippet?

• false

• true

• compilation error

• runtime error

What will be the output of the following JavaScript code snippet?

• 0

• 1

• compiler error

• runtime error

What will be the output of the following JavaScript code?

• short

• 123.56

• tall

• 190

Which is a more efficient JavaScript code snippet?

• Code 1

• Code 2

• Both Code 1 and Code 2

• Cannot Compare

What happens in the following JavaScript code snippet?

• An exception is thrown

• The values of js are logged or stored in a particular location or storage

• The value of js from 0 to 9 is displayed in the console

• An error is displayed

What will be the output of the following JavaScript code?

• 2

• 5

• 555

• error

Which is the correct syntax to call an external JavaScript file in the current HTML document?

• <script src="jsfile.js"></script>

• <script href=" jsfile.js"></script>

• <import src=" jsfile.js"></import>

• <script link=" jsfile.js"></script>

Which JavaScript method is used to write into an alert box?

• window.alertHTML()

• window.alert()

• window.alertBox()

• window.alertContent()

What is the main difference between var and let keywords in JavaScript?

• var defines a variable while let defines a constant

• var defined function scoped variable while let define block scoped variable

• The value of a variable declared with var can be changed while the value of a variable declared with let cannot be changed

• All of the above