What is the difference between html css js
#html What is the difference between css js?
In daily study, we have all learned html, css and js. At first, we could not distinguish the differences and connections between the three. As our knowledge increased, we gained some understanding. Let’s take a look at what these three technologies are and what they can do.
1. HTML—Hypertext Markup Language
Hypertext Markup Language. It uses markup symbols to mark various parts of the web page to be displayed. The web page file itself is a text file. By adding tags to the text file, you can tell the browser how to display the content (such as how to process text, how to arrange pictures, how to display pictures, etc.). The browser reads the web page files in order, and then interprets and displays the marked content according to the tags:
<html> <head> <title>HTML</title> </head> <body> </body> </html>
HTML text contains so-called "link points". HTML uses hyperlinks to combine various spaces. A web of text that organizes textual information together. In general, HTML is a language that integrates web page structure and content display.
2. CSS—Cascading Style Sheet
Cascading style sheet. It is a markup language that separates style information from web page content. In our beef brisket news release system, we have used CSS files to modify the styles of some labels.
We use CSS to define styles for each HTML element and can also be used for multiple interfaces. When making a global update, just modify the style.
body { border :1px solid #000;/*整体的边框*/ font-size :14px; }To put it bluntly, CSS is the language for setting the attributes of HTML elements on web pages.
3. JavaScript
I was very depressed at first. Why is its name so similar to Java?
This is a typical marketing success, and its promotion success is also Borrowing the power of Java. When Microsoft began to realize that Javascript was becoming popular among web developers, Microsoft followed suit and created its own scripting language, JScript.
Javascript is a scripting language based on Object and Event Driven with security features. The purpose of using it is to work with HTML hypertext markup language and Java script language (Java applet) to link multiple objects in a Web page and interact with Web clients. For example, you can set mouseover effects, validate forms on the client, create customized HTML pages, display warning boxes, set cookies, and more.
function jsHello{ alert('Hello World！'); }Embed the code in HTML language, it will pop up a "Hello World" dialog box when loading. As for how to embed it, we already knew it at the beginning of learning JS video.
This is all about the differences between HTML, CSS and JS. The most important thing to learn is to rely on yourself, master the correct learning skills, and persevere. , can be conquered!
The above is the detailed content of What is the difference between html css js. For more information, please follow other related articles on the PHP Chinese website!
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