What does ajax do? What does Ajax do?

AJAX is a web development technology for creating interactive web applications. Ajax= asynchronous JavaScript and XML or HTML (a subset of standard generalized markup language). Techniques that can be used to create fast and dynamic web pages. The technology of updating part of a webpage without reloading the whole webpage. Ajax can asynchronously update web pages by exchanging a small amount of data with the server in the background. This means that you can update some parts of a webpage without reloading the whole webpage.

If the content needs to be updated, the traditional web page (without Ajax) must reload the whole web page.

Ajax development of extended data is very different from traditional B/S development. These differences bring new programming problems, the biggest of which is ease of use. Because Ajax relies on JavaScript and XML of the browser, the compatibility and supported standards of the browser become as important as the runtime performance of JavaScript.

Ajax combines all kinds of ever-changing technologies with a strongly coupled client-server environment, and proposes a new development method. Ajax developers must understand the traditional MVC architecture, which limits the boundaries between application levels. At the same time, developers need to consider outside the B/S environment and redefine MVC boundaries with Ajax technology.

Most importantly, Ajax developers must treat a Web application as a single page, not as a collection of pages. Once the scope between UI design and service architecture is strictly separated, developers need to update and change the technology set.

Reference source: Baidu Encyclopedia -ajax

Overview of the basic theory of jQuery?

JQuery is a JavaScript function library.

JQuery is a lightweight JavaScript library that writes less and does more.

The jQuery library contains the following functions:

HTML element selection

HTML element operation

CSS operation

HTML event function

JavaScript special effects and animation

HTMLDOM traversal and modification

Web development technology for creating interactive, fast and dynamic web applications

public utilities

Tip: In addition, jQuery also provides a large number of plug-ins.

What can JS do?

JS and HTML are both format files of web pages, HTML is a web page written in a standard and accurate language, JS is a high-level language, and the generalized web page languages include AJAX, JS, XML, ASP, PHP, etc. JS is just one of them. Software that converts HTML into JS files is to make a web page in common language, reorganize the interior with JS language, and show the same effect again without changing the content of the page.

What is dw software used for?

The main function of dw software is to design and make websites and manage websites. Functions of dw software: Dreamweaver integrates the functions of web design, website development and website management, and has the characteristics of visualization, cross-browser and multi-platform support. At the same time, the software can also be used to develop powerful, efficient and dynamic interactive websites.

The specific functions are:

(1) With the improved FTP performance in Dreamweaver software, you can transfer large files more effectively.

(2) The real-time viewing function can show the effect of HTML code pages more comprehensively.

(3) Adaptive grid has foot bath to create cross-platform and cross-browser compatible web page design.

(4) Integrated coding enhancement makes HTML, JavaScript, Spry, jQuery, etc. Coding with Ajax framework, prototype and several server languages is faster and clearer.

(5) Click the mouse to access Dreamweaver's online service, share the screen with colleagues or customers, get the required search results from the online community and quickly find creative inspiration.

What exactly does the web front end mean?

It mainly includes three technologies: html, css and js. The html5 development of Baiqian belongs to the same type of work, which is a refinement of the original web design and production posts. The main job is to make the design drawings made by designers into web pages that can put data in the background, in other words, to realize what is put on the web page, the color in the text, the size of the picture, including the realization of special effects in the web page.

1.pc-side website development: web front-end can make many beautiful pc-side pages with html+css, and website special effects can be completed with js+jquery.

2. Mobile +app development: Today's web front-end workers are not limited to PCs, but also mobile +app. web front-end workers can use front-end tools and frameworks to make beautiful mobile pages or apps.

3.html5 game development: With the rise of html5, web front-end can also play small games, and many small games and game engines can be completed with canvas.