What functions can jquery achieve?-Front-end Q&A-php.cn

jQuery is a popular JavaScript library that helps developers work with JavaScript and HTML documents more easily.

jQuery can achieve many functions, here are some of them:

DOM operation

jQuery makes it simple and easy to operate the Document Object Model (DOM) Understand. Developers can use jQuery to select, modify, and delete elements in HTML documents. It can optimize the traditional JavaScript process of operating DOM, making the code more concise and readable.

For example, select the element with the id "myDiv" through the following code:

$("#myDiv")

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Event handling

Using jQuery, you can add events to HTML elements handler. Event handlers can monitor user actions such as clicks, hovers, scrolls, page loads, etc.

The following are some commonly used event handling functions:

.click() // 当元素被单击时执行函数 .mouseover() // 当鼠标移到元素上时执行函数 .scroll() // 当页面滚动时执行函数

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Animation effects

##jQuery comes with many built-in animation functions that can produce various animation effects . This enables developers to dynamically show, hide, and move HTML elements.

The following are some commonly used animation functions:

.hide() // 隐藏元素 .show() // 显示元素 .slideUp() //向上滑动元素 .fadeOut() // 淡出元素 .animate() // 带有自定义效果的动画函数

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AJAX is a method that sends a message to the server without reloading the entire page. Techniques for requesting and receiving responses. AJAX effects can be easily achieved using jQuery, thereby improving website loading speed and user experience.

Here are some commonly used AJAX functions:

$.get() // 向服务器发送 GET 请求 $.post() // 向服务器发送 POST 请求 $.ajax() // 向服务器发送 AJAX 请求

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jQuery is open source and has a super active community. Many developers and enthusiasts have created many jQuery plugins that can be easily added to websites.

The following are some commonly used plug-ins:

jQuery UI // 提供用户界面组件和交互性 Slick // 简单易用的幻灯片库 jQuery Validation // 提供表单验证插件

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To sum up, jQuery can achieve many functions and easily process JavaScript and HTML documents. Using jQuery can reduce the amount of code and make development faster and more efficient.

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