Can I write PHP methods in jQuery?

#Can I write PHP methods in jQuery?

You cannot write PHP methods in jQuery. jQuery is a fast and concise framework written in JavaScript. JavaScript and PHP are two completely different languages, and JavaScript runs on the front end. PHP runs on the backend, so it cannot be interacted with directly.

jQuery working principle

jQuery modules can be divided into 3 parts: entry module, underlying support module and functional module.

In the jQuery object construction module, if a selector expression is passed in when calling the constructor jQuery() to create a jQuery object, the selector Sizzle (a CSS selector engine implemented in pure JavaScript) will be called , used to find a collection of elements that match a selector expression) traverses the document, finds matching DOM elements, and creates a jQuery object that contains references to these DOM elements.

The browser function testing module provides test results for different browser functions and bugs, and other modules use these test results to solve compatibility issues between browsers.

In the underlying support module, the callback function list module is used to enhance the management of callback functions, supporting functions such as adding, removing, triggering, locking, and disabling callback functions; the asynchronous queue module is used to decouple asynchronous tasks and callback function, which adds status to the callback function based on the callback function list, and provides multiple callback function lists, supporting the propagation of the success or failure status of any synchronous or asynchronous callback function; the data cache module is used to provide DOM elements with Attach any type of data to Javascript objects; the queue module is used to manage a set of functions, supports the enqueuing and dequeuing operations of functions, and ensures that the functions are executed in order. It is implemented based on the data cache module.

In the functional module, the event system provides a unified event binding, response, manual triggering and removal mechanism. It does not bind events directly to DOM elements, but is based on the data caching module. Manage events; the Ajax module allows loading data from the server without refreshing the page, it is based on the asynchronous queue module to manage and trigger callback functions; the animation module is used to add animation effects to web pages, it is based on the queue module to manage and execute animation functions ;The attribute operation module is used to read, set and remove HTML attributes and DOM attributes; the DOM traversal module is used to traverse parent elements, child elements and sibling elements in the DoM tree; the DOM operation module is used to insert and remove , copy and replace DOM elements; the style operation module is used to obtain calculated styles or set inline styles; the coordinate module is used to read or set the document coordinates of DOM elements; the size module is used to obtain the height and width of DOM elements.

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