Let's talk about Types in javascript

In JavaScript, there are several types of data that you can work with in your code. Here is a list of the basic data types in JavaScript:

Number: Numbers can be integers (e.g., 42) or floating-point values (e.g., 3.14). In JavaScript, all numbers are represented as double-precision floating-point values.

String: A string is a sequence of characters, represented in JavaScript by either single or double quotes (e.g., 'Hello, world!' or "Hello, world!").

Boolean: A boolean value represents a true or false value.

null: The null value represents the absence of a value or a null reference.

undefined: The undefined value represents a value that has not been assigned a value.

In addition to these basic data types, JavaScript also has several composite data types, which are data structures that can hold multiple values. These composite data types include:

Array: An array is a collection of values that are all of the same data type. Arrays are created using square brackets (e.g., [1, 2, 3]).

Object: An object is a collection of key-value pairs. Objects are created using curly braces (e.g., {name: 'John', age: 30}).

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Comments

[Rense Bakker]

The items in an array do not necessarily have to be the same data type:

const myArray = [1, 2, 'hello', () => alert('world')]

[Mirza Mahad Baig]

We also have Bigint to store larger numbers.