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Understand the classification and functional differences of the jQuery library

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Release： 2024-02-22 23:24:04

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Understand the classification and functional differences of the jQuery library

jQuery is a popular JavaScript library used to simplify DOM operations, event handling, animation effects, etc. in the web development process. It is widely used in web development, which can greatly simplify code writing and improve development efficiency. Before understanding the classification and functional differences of jQuery, you must first understand the version of jQuery.

The versions of jQuery are divided into 1.x series and 2.x/3.x series. The 1.x series supports the old version of IE browser, while the 2.x/3.x series no longer supports IE6/7/8 browsers, with more powerful functions and higher performance. Next, let us understand the classification and functional differences of the jQuery library.

Category

jQuery core library (jQuery Core)

jQuery core library is a library used to handle DOM operations and events The core part of processing, animation effects, etc. It contains the basic functions of jQuery and is the most basic part of using jQuery.

Code example:

<!DOCTYPE html>
<html>
<head>
  <title>jQuery核心库示例</title>
  <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
  <div id="myDiv">Hello, jQuery!</div>
  <script>
    $(document).ready(function(){
      $("#myDiv").css("color", "red");
    });
  </script>
</body>
</html>

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jQuery Plugins (jQuery Plugins)

jQuery plug-in is an extension based on the jQuery core library. It provides a wealth of functions and effects to help developers quickly realize various needs. Common plug-ins include carousels, date pickers, image zooming, etc.

Code sample:

<!DOCTYPE html>
<html>
<head>
  <title>jQuery插件示例</title>
  <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.8.1/slick.min.js"></script>
  <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.8.1/slick.min.css">
</head>
<body>
  <div class="slider">
    <div><img  src="image1.jpg" alt="Understand the classification and functional differences of the jQuery library" ></div>
    <div><img  src="image2.jpg" alt="Understand the classification and functional differences of the jQuery library" ></div>
    <div><img  src="image3.jpg" alt="Understand the classification and functional differences of the jQuery library" ></div>
  </div>
  <script>
    $(document).ready(function(){
      $(".slider").slick();
    });
  </script>
</body>
</html>

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Function difference

DOM operation

jQuery can quickly manipulate DOM elements Perform addition, deletion, modification, and search operations, such as selecting elements, setting styles, adding new elements, etc. By using jQuery, we can manipulate the DOM more concisely.

Sample code:

$("button").click(function(){
  $("p").hide();
});

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Event handling

##jQuery provides a simple and convenient event handling method that can be easily bound Defining events, unbinding events, triggering events, etc. Developers can easily handle various events.

Sample code:

$("button").click(function(){
  alert("按钮被点击了！");
});

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Animation effect

Sample code:

$("button").click(function(){
  $("p").toggle("slow");
});

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Through the above introduction, you can see the classification and functional differences of the jQuery library. You can choose the appropriate jQuery part to use according to different needs to improve development efficiency. Hopefully the above content will help you understand the jQuery library better.

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