What do array elements in js consist of?

JavaScript array elements can contain any data type: Basic types: numbers, strings, Boolean values, undefined, null Reference types: objects, arrays, functions

Composition of JavaScript array elements

In JavaScript, array elements can be composed of any data type, including:

• Basic Type: Number, string, boolean, undefined, null
• Reference type: Object, array, Function (function)

Detailed description:

An array is an ordered data structure in which elements are stored by index. Array indexes start at 0, so the first element has index 0, the second element has index 1, and so on.

Each array element is stored in a specific location in memory. The elements in the array can be of the same or different types.

Basic types:

• Number: integer and decimal
• String: text or character sequence
• Boolean value (boolean): true or false
• undefined: represents an undefined value
• null: represents a null value or a non-existent value

Reference type:

• Object: a collection of key-value pairs
• Array: another ordered data structure
• Function: A set of executable code blocks

Example:

<code class="js">const arr = [1, 'Hello', true, undefined, null, [1, 2], {name: 'John'}];</code>

This array contains all allowed data types.

Note:

• Array elements can contain other arrays or objects, creating nested data structures.
• JavaScript arrays are dynamic, which means their size can be adjusted as needed.

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