How to understand the relationship between HTML, CSS, and JavaScript?

HTML, CSS, and JavaScript are the core parts of web front-end development, so what is the relationship between the three of them? The following article will take you to understand the relationship between HTML, CSS, and JavaScript. I hope it will be helpful to you.

A brief introduction to HTML, CSS and JavaScript

html (Hypertext Markup Language): Use A language used to describe web pages and define the structure of web pages. Can include pictures, music and other non-text elements.

CSS (Cascading Style Sheet): Defines how to display HTML elements and describes what the web page looks like.

JavaScript (scripting language): It is used to implement dynamic functions and special effects on web pages, such as animation, interaction, etc.

The most accurate web design idea is to divide the web page into three levels, namely: structure layer (HTML), presentation layer (CSS), and behavior layer (Javascript).

1. Structural layer: determines the structure and content of the web page, that is, "what content is displayed."

2. Presentation layer: Design the presentation style of the web page, that is, "how to display relevant content"

3. Behavior layer: control the behavior (effect) of the web page, that is, "how the content should respond to events" React"

The relationship between HTML, CSS, and JavaScript

HTML builds the framework and foundation of a web page; CSS sets the page elements Style, beautify web pages; Javascript implements dynamic functions of web pages and interacts with them.

For example: HTML can be regarded as the skeleton and structure of a house; CSS can be understood as the decoration, painting, etc. of the house; Javascript can be understood as the installation of doors, windows, air conditioners, TVs, etc., and some functional work. It has to be implemented by Javascript.

Recommended video tutorials: "HTML Tutorial", "CSS Tutorial", "JavaScript Tutorial"

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