What does javascript consist of?

JavaScript mainly consists of the following parts: syntax keywords, identifiers, operators, statements, data types, objects, functions, arrays, DOM, event handling and Web API, which allows JavaScript to access and modify HTML elements , respond to user input or page state changes, and interact with external systems.

What does JavaScript consist of?

JavaScript is mainly composed of the following parts:

1. Syntax

• Keywords (for example: var, const, let )
• Identifiers (names of variables, functions, etc.)
• Operators (arithmetic, logical, assignment, etc.)
• Statements (conditional statements, loop statements, etc.)

2. Data type

• Primitive type (for example: number, string, boolean, undefined, null)
• Object type (for example : Array, Object, Function)

3. Object

• A collection of properties and methods
• can create and modify itself The object
• uses a primitive type or other object as the value

4. Function

• Code that accepts input and produces output Blocks
• can be reused and passed as parameters
• Use functions to implement complex logic

5. Arrays

• A collection of ordered elements
• You can access and modify elements using indexes
• Can store various types of data

6. DOM

• Document Object Model
• Represents the tree structure of the HTML document
• Allows JavaScript to access and modify HTML elements

7. Event handling

• Response to user input or page state changes
• Use event listeners to capture and handle events
• For example: click, mouse movement, page load

8. Web API

• Provides access to browser or operating system functions
• Includes APIs for geolocation, file operations, and network communications
• Allows JavaScript to interact with external systems

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