Web application development technology (1)

Web application development technology

A complete Web applications require joint is implemented with the preceding development of technology and back-end development technology

The most important pre-stage development technologies: HTML, CSS, JavaScript

Back-end development technologies: Python, Java, PHP, ASP.NET, Node.js

 

Web project development technical team composed of: Project Manager, Product Manager (Product Manager, referred to as PM), UI designers or artists, engineers, front-end, back-end engineers, test engineers, operation and maintenance engineer

 

Front-end development technology

Responsible for web pages

HTML: Hyper Text Markup Language, HTML, browser also comply with technical, it defines the meaning of a series of elements of web content and organization of these elements

CSS: Cascading Style Sheet, cascading style sheets, page rendering control by style table appearance in front of the user

JavaScript: short JS, run the scripting language in the browser, and manipulate HTML elements respond to user actions

 

HTML

Markup Language, W3C is responsible for the development of technical standards, HTML5 is the latest version of the HTML standard technology

W3C: World Wide Web Consortium, World Wide Web Consortium

HTML5 is not just refer to HTML version 5.0, it is a series of modern technology to develop rich content of the page is a generic term

HTML is a subset of XML, but its format is not strictly XML

An HTML document is a statement by the document, a number of elements that make up HTML

HTML document is called a page, the file name suffix .html or .htm, you can use the browser to open

HTML documents are text files, you can use any text editor to write

 

World major browsers:

Google Chrome

Mozilla Firefox

Opera

Apple Safari

Microsoft Internet Explorer

 

Common HTML elements (tags):

Child element of the head element is defined metadata pages, i.e., page description information of various

The content of the body element will be displayed in the browser window client area

p: paragraph, the paragraph

img: image, representing an image, the common attributes src, width, height, border (border), etc.

a: hyperlinks, common attributes href, target, etc., i.e., can jump to another page, may jump to different locations within the same page (anchor link)

hr: dividing line

h1-h6: different levels of title (Note: This is used to organize the content structure, it is not used to adjust the size of the word)

pixel: pixel

 

Spread

1. You can use the software to write front-end HBuilder X

2. HTML5 relative to HTML4, additions and modifications to some elements

3. Rich content: the rich content, not just text content, as well as video and audio, etc.

4. JavaScript and Java has nothing to do, was called because JavaScript is the fire was Java, Java want to rub down the heat

5. Bitmap magnified when there will be a mosaic, and vector remain unchanged

6. img and a display line can have multiple page, whereas row for block-level elements will

7. Single label can omit the trailing slash

8. target = "_ blank" can make a hyperlink to open a new web page window, rather than covering

9. As long as responsible for the content pages of HTML, CSS styles in charge

10. pip install the module name -i https://pypi.douban.com/sample