HTML CSS JAVASCRIPT JSON DOM JQUERY PHP

Latest I have been learning about web pages and came into contact with many concepts, HTML CSS JAVASCRIPT JSON DOM JQUERY PHP.

1.html , similar to XML.

HTML is composed of tags and elements, and our browser can parse HTML into text. Derived from HTML are XHTML and HTML5. XHTML combines the characteristics of XML and has stricter requirements for tags. <> and must appear in pairs. HTML5 adds some new tags and features2.CSSCascading Style
S

heets Cascading

style sheets.

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

3. JAVASCRIPT

is a scripting language. It has nothing to do with java.

It can perform various operations on HTML, including changing styles, adding modified content, responding to events, etc. HTML can be regarded as text, and JAVASCRIPT is like a shell or other similar scripting language that can complete the operation of text.

The difference is that JAVASCRIPT has its own built-in objects. Its syntax is more like C, and it also has object-oriented ideas. JAVASCRIPT is not jsp, jsp is a server-side scripting language, similar to PHP4.DOMDocument Object Model

HTML DOM defines a standard way to access and manipulate HTML documents. The DOM tree builds the entire HTML into a tree structure according to tags

, and JAVASCRIPT operates HTML through the DOM tree

5.

otation

JSON is a 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" } ] } consists of classes and arrays

6.JQUERY

jQuery is a JavaScript function library.

It builds objects based on DOM and has more methods of its own.

jQuery library includes the following features:

HTML element selection

HTML element manipulation

CSS manipulation

HTML event functions

JavaScript effects and animations

HTML DOM traversal and modification

AJAX
Utilities

It is based on JAVASCRIPT, so the function is definitely more powerful than JAVASCRIPT

7.
• PHP is a A powerful server-side scripting language for creating dynamic, interactive sites.
• It completes the functions of dynamic web pages and is closely connected with the database. HTML can be output according to the user's request

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The above introduces HTML CSS JAVASCRIPT JSON DOM JQUERY PHP, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.