Data Types in JavaScript

What are the two main categories of data types in JavaScript?

• primitive data types and reference data types

• numeric data types and string data types

• boolean data types and array data types

• object data types and function data types

Can you name an example of a primitive data type in JavaScript?

• object

• string

• boolean

• number

What is the difference between primitive and non-primitive data types?

• Primitive data types are more complex than non-primitive data types.

• Non-primitive data types are not supported by programming languages.

• Primitive data types include arrays, classes, and interfaces.

• Primitive data types are basic data types directly supported by the programming language, while non-primitive data types are derived from primitive data types and include arrays, classes, interfaces, etc.

Which data type is used to represent numeric values in JavaScript?

• string

• number

• array

• boolean

How do you declare a string variable in JavaScript?

• let myString = 'Hello World';

• myString = 'Hello World';

• const myString = 'Hello World';

• var myString = 'Hello World';

True or False: Boolean data type in JavaScript can only have two values.

• False

• True

• Sometimes

• Maybe

What are some examples of primitive data types in JavaScript?

• integer

• float

• string, number, boolean, null, undefined

• character

Explain the concept of non-primitive data types in JavaScript.

• Non-primitive data types in JavaScript are simple data types that can only hold one value.

• Non-primitive data types in JavaScript do not have any methods associated with them.

• Non-primitive data types in JavaScript are limited to storing numerical values only.

• Non-primitive data types in JavaScript are complex data types that can hold multiple values and have methods associated with them.

What is the purpose of the Number data type in JavaScript?

• To format date and time values

• To represent numeric values

• To handle boolean operations

• To represent text values

How can you check the data type of a variable in JavaScript?

• variableName.type()

• typeOf variableName

• checkType(variableName)

• typeof variableName