DTJSQuiz

Which one is a good example of data type string value?

• 123string

•  ‘string123’

• string

• Iam + ‘String’

Which is NOT considered as javascript number data type

• 456.0

• 456e7

• 1223456n

• 789f

What is the result of this statement?

console.log('Boolean(10) is ' + Boolean(10));

• true

• false

var motorcyle =["honda,"" kawasaki"," yamaha"];

this line of statement is an example of data type

• string

• object

• array

• undefined

let student;

console.log(student);

the variable student is an example of data type

• string

• object

• array

• undefined

This data type value is treated as special which represents empty or unknown. Which keyword is being used to characterize this variable?

• variable

• null

• void

• zero

let mobilePhone = {

name: 'iphone',

model: '15',

price: 'Php 56,990' };

This js code is an example of data type

• array

• string

• object

• number

let o = "Ocean" + 5 + 3;

console.log(o);

The result is:

• error

• NaN

• Ocean53

• "Ocean"53

When you code and run this line of code

console.log(typeof 123)

will result into

• string

• number

• undefined

• null

This data type is very useful when a programmer wants to check the condition while validating something in the script.

• string

• object

• array

• boolean