HTML CSS JAVASCRIPT JSON DOM JQUERY PHP

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1.HTML

H Yper T ext M Arkup L anguage

HTML is not a programming language, but a markup language, similar to XML.

HTML is made up of tags and elements, and our browsers can parse HTML into text.

HTML-derived and XHTML and html5,xhtml are attributes that combine XML, and the requirements for labeling are stricter,<> and must appear in pairs.

HTML5 is to add some new tags and features

2.CSS

C ascading S Tyle S heets cascading style sheets.

is used to beautify the HTML, such as the location of the display, the color of the font, etc.

3.JAVASCRIPT

is a scripting language. There is no half-penny relationship with Java.

It can do various things with HTML, including changing styles, adding changes, responding to events, and so on. HTML can be used as text, and JavaScript, like a scripting language such as a shell, can do the work of text.

The difference is that JavaScript has its own built-in object. Its syntax is more like C, and it has an object-oriented idea.

JavaScript is not jsp,jsp is a server-side scripting language, similar to PHP

4.DOM

Document Object Model

The HTML DOM defines a standard way to access and manipulate HTML documents. The DOM tree is built as a tag to build the entire HTML into a tree structure

The JavaScript operation of HTML is achieved through the DOM tree.

5.JSON

JAvaScript Object Notation

JSON is the syntax for storing and exchanging textual information. Similar to XML.

JSON is smaller, faster, and easier to parse than XML.

{"Employees": [{"FirstName": "Bill", "LastName": "Gates"},{"FirstName": "George", "LastName": "Bush"},{"FirstName": " Thomas "," LastName ":" Carter "}]}Composed of classes and arrays

6.JQUERY

JQuery is a library of JavaScript functions.

It constructs objects based on the DOM, and has more of its own methods.

The JQuery library contains the following features:

• HTML element Selection
• HTML element manipulation
• CSS actions
• HTML Event functions
• JavaScript Effects and animations
• HTML DOM Traversal and modification
• Ajax
• Utilities

It's based on Javascipt, so features are definitely more powerful than JavaScript.

7.PHP

PHP is a powerful server-side scripting language for creating dynamic, interactive sites.

It completes the function of the Dynamic Web page, closely related to the database. HTML can be output based on the user's request

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