What are the data types supported by JavaScript?

What are the data types used in JavaScript?

The set of types in the JavaScript language consists of primitive values and objects.

  • Primitive values (immutable datum represented directly at the lowest level of the language) Boolean type. Null type. Undefined type. Number type. BigInt type. String type. Symbol type.
  • Objects (collections of properties)

What are the data types supported by JavaScript give examples?

JavaScript Data Types

Data Types Description Example
String represents textual data ‘hello’ , “hello world!” etc
Number an integer or a floating-point number 3 , 3.234 , 3e-2 etc.
BigInt an integer with arbitrary precision 900719925124740999n , 1n etc.
Boolean Any of two values: true or false true and false

What are the 7 data types in JavaScript?

In javascript, there are 7 data types.

  • Number. Numbers in JavaScript are stored as 64-bit floats, and can be manipulated using the built-in operators. …
  • String. Strings are always declared through quotations: …
  • Boolean. Booleans are the logical values, either true or false . …
  • Symbol. …
  • Object. …
  • undefined. …
  • null.

What are the three data types in JavaScript?

JavaScript allows you to work with three primitive data types: numbers, strings of text (known as “strings”), and boolean truth values (known as “booleans”). JavaScript also defines two trivial data types, null and undefined, each of which defines only a single value.

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What are 4 types of data?

4 Types of Data: Nominal, Ordinal, Discrete, Continuous

  • These are usually extracted from audio, images, or text medium. …
  • The key thing is that there can be an infinite number of values a feature can take. …
  • The numerical values which fall under are integers or whole numbers are placed under this category.

What are the five data types?

Data types

  • String (or str or text). Used for a combination of any characters that appear on a keyboard, such as letters, numbers and symbols.
  • Character (or char). Used for single letters.
  • Integer (or int). Used for whole numbers.
  • Float (or Real). …
  • Boolean (or bool).

What is JSON format?

JavaScript Object Notation (JSON) is a standard text-based format for representing structured data based on JavaScript object syntax. It is commonly used for transmitting data in web applications (e.g., sending some data from the server to the client, so it can be displayed on a web page, or vice versa).

Is array a data type?

The array data type is a compound data type represented by the number 8 in the database dictionary. Arrays store a list of elements of the same data type accessed by an index (element) number. The term array is synonymous with the terms list, vector, and sequence.

What is the main use of JavaScript?

JavaScript is a text-based programming language used both on the client-side and server-side that allows you to make web pages interactive. Where HTML and CSS are languages that give structure and style to web pages, JavaScript gives web pages interactive elements that engage a user.

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What is === in JavaScript?

=== (Triple equals) is a strict equality comparison operator in JavaScript, which returns false for the values which are not of a similar type. This operator performs type casting for equality. If we compare 2 with “2” using ===, then it will return a false value.

Is function a data type?

Object, Array, and Function (which are all types of objects) are composite data types. Whereas Undefined and Null are special data types. Primitive data types can hold only one value at a time, whereas composite data types can hold collections of values and more complex entities.

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