What is the difference between css and js

The difference between css and js: 1. CSS is web page performance and JS is web page behavior. 2. CSS is used to modify the style of web pages, that is, to beautify HTML pages; while js can process various dynamic effects of the page and is used to realize the function of interaction between web pages and people.

The operating environment of this tutorial: Windows 7 system, CSS3&&javascript version 1.8.5, Dell G3 computer.

CSS (Cascading Style Sheet) Cascading Style Sheet

Presentation - design the presentation style of the web page, that is, "how to display relevant information Content”

CSS is a markup language that separates style information from web page content. We use css to define styles for each element; it is mainly used to beautify HTML pages.

The syntax is: selector {property: value} (selector {property: value}).

You can modify the display, position and other styles of each element in the HTML document by setting the corresponding style attributes; such as modifying the color, font, font size, width and height, position, background, etc.

JS (JavaScript) a dynamic scripting language

Behavior (behavior) - controlling the behavior (effect) of the web page, that is, "how the content should react to events"

Using JavaScript code can make the front desk interactive (click events). It is often used to add various dynamic functions to web pages and provide users with a smoother and more beautiful browsing effect. Usually JavaScript scripts realize their functions by embedding them in HTML.

The difference between css and js

CSS is web page performance and JS is web page behavior.

CSS, Cascading Style Sheet, is used to modify the style of web pages, that is, to make web pages look good; and javascript is a browser client script language, used to realize the function of interaction between web pages and people.

css statically modifies the web page so that the page can be displayed in a certain layout.

CSS is a markup language that separates style information from web page content. We use css to define styles for each element; it is mainly used to beautify HTML pages.

JS handles various dynamic effects on the page and can be used to realize the functions of interaction between web pages and people, such as replacing pictures, scrolling pictures, displaying and hiding layers, processing shortcut keys, etc. .

Client web pages usually include web content, HTML, javascript and CSS

To give you a popular analogy

HTML is like a human skeleton. Constituting the basic framework of a web page

CSS is like a person’s skin and appearance, describing the appearance of a web page

And javascript is like a human muscle, making a web page interactive

And the content of a web page It’s like human knowledge and skills.

For more programming-related knowledge, please visit: Introduction to Programming! !

The above is the detailed content of What is the difference between css and js. For more information, please follow other related articles on the PHP Chinese website!