Is php the same as jquery?

php is different from jquery. Differences: 1. PHP is a server-side language, while jquery is a framework based on JavaScript (client-side language); 2. PHP is used for back-end development, while jquery is used for front-end development, providing a simple JavaScript design pattern. , optimize HTML document operation, event processing, animation design and Ajax interaction.

The operating environment of this tutorial: windows7 system, PHP8.1&&jquery3.6.1 version, DELL G3 computer

php is different from jquery .

PHP is a scripting language executed on the server side and is a language used for back-end development; while jquery is a library of javascript and is a framework used for front-end development.

What is PHP?

PHP (Hypertext Preprocessor, hypertext preprocessor) is a general open source, simple, object-oriented, interpreted, robust, safe, and very performant A high-performance, architecture-independent, portable, dynamic scripting language.

PHP is a scripting language executed on the server side. It is similar to C language and is a commonly used website programming language. PHP's unique syntax mixes C, Java, Perl, and PHP's own syntax. It is conducive to learning and widely used. It is mainly suitable for the field of web development.

What can php do?

First: PC website development

60% of global Internet websites use PHP technology, and 80% of domestic Internet websites are developed using PHP. These websites include shopping websites, government enterprise websites, QQ space, forum blogs, etc.

Second: Mobile microsite development

The popularity of mobile devices has laid the foundation for the rapid development of the mobile Internet! Mobile Taobao website, mobile JD website, etc., microsites in WeChat public account applications. In the future, microsites and public accounts will definitely replace the status of APP!

Third: APP background development

APP background development is also a product of the development of the mobile Internet. In order to provide users with a better experience on mobile phones, most websites have joined the ranks of developing APPs. And PHP back-end technology will be their best choice.

PHP is mainly used for website development. Many small websites are developed with PHP. PHP is open source, which is what makes PHP enduring. In terms of e-commerce and communities, PHP has very mature open source codes and templates, which makes PHP extremely widely used. The disadvantage is that the audience is small and replaceable.

What is jquery?

jQuery is a fast and concise JavaScript framework. It is another excellent JavaScript code library (framework) after Prototype. It was released by John Resig in January 2006.

jquery refers to an encapsulated JavaScript function library, a lightweight "write less, do more" JavaScript library.

jQuery encapsulates commonly used functional codes in JavaScript, provides a simple JavaScript design pattern, and optimizes HTML document operations, event processing, animation design and Ajax interaction.

The purpose of jQuery design is "write Less, Do More", which means writing less code and doing more things.

The core features of jQuery can be summarized as follows: It has a unique chain syntax and a short and clear multi-functional interface; it has an efficient and flexible CSS selector, and can extend the CSS selector; it has convenient plug-in extensions Mechanism and rich plug-ins. jQuery is compatible with various mainstream browsers, such as IE 6.0, FF 1.5, Safari 2.0, Opera 9.0, etc.

What can jQuery do?

1. Quickly obtain document elements

jQuery’s selection mechanism is built on the Css selector. It provides the ability to quickly query elements in DOM documents, and greatly enhances the capabilities of JavaScript. How to get page elements.

2. Provide beautiful page dynamic effects

jQuery has a series of built-in animation effects, which can develop very beautiful web pages. Many websites use jQuery’s built-in effects, such as fade-in Dynamic special effects such as fade out and element removal.

3. Create AJAX non-refresh web pages

AJAX is the abbreviation of asynchronous JavaScript and XML. It can develop very sensitive non-refresh web pages, especially when developing server-side web pages, such as PHP websites. , need to communicate with the server back and forth. If AJAX is not used, the web page has to be refreshed every time the data is updated. However, after using AJAX special effects, the page can be partially refreshed to provide dynamic effects.

4. Provide enhancements to the JavaScript language

jQuery provides enhancements to basic JavaScript structures, such as element iteration and array processing.

5. Enhanced event handling

jQuery provides various page events, which can prevent programmers from adding too much event handling code in HTML. Most importantly, its event handling The browser eliminates various browser compatibility issues.

6. Change the content of the web page

jQuery can modify the content of the web page, such as changing the text of the web page, inserting or flipping the web page image. jQuery simplifies the way that JavaScript code needs to be processed.

Extended knowledge: The difference between php and JavaScript

1. The basic characteristics of the two are different:

php is a general open source scripting language, a server-side language. The syntax absorbs the characteristics of C language, Java and Perl, which is easy to learn and widely used. It is mainly suitable for the field of Web development.

js is a scripting language that belongs to the Internet. It is a client language that has been widely used in Web application development. It is often used to add various dynamic functions to web pages and provide users with a smoother and more beautiful experience. Browse the effects. Usually JavaScript scripts realize their functions by embedding them in HTML.

2. String connector

The string connector of PHP is: "."

The string connector of JavaScript is:" "

3. Array addition

php array addition: " ", you can add it directly

JavaScript uses the splicing function: concat( )

4. Case sensitivity

php: Only variable names are case-sensitive

JavaScript: All are case-sensitive

5. Declare variables

php: Variable declaration: " $Variable name "

JavaScript: Variable declaration: " var Variable name "

6. Regarding the parsing mechanism of single quotes and double quotes

php: Double quotes can parse special characters, including variables. Single quotes don't work.

JavaScript: There is no difference between single quotes and double quotes.

7. The difference between actual formal parameters

In JavaScript, there is no limit on the number of formal parameters and actual parameters. The number of formal parameters can be greater or less than the actual parameters. ginseng.

In PHP, if the actual parameter is smaller than the formal parameter, an error will be reported because there are parameters that are defined but not used. This may affect the function of the function in the PHP interpretation mechanism.

8. Variable value transfer methods are different: In

#js, the value transfer and address transfer of variables are determined based on the type of the object being passed. You can control it as you wish;

All types in PHP can freely control whether the value is passed by value or by address. Adding & before the variable can become the address method, and without adding &, it can be the value method. .

9. The core functions of the two are different:

The core function in php is implemented using functions, for example, getting the length of a string: $length = strlen(str);

and js is implemented using object methods, such as getting the length of a string: var length = str.length.

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