What are the attributes of jq lazy loading?

The jq lazy loading attributes include data-src, data-background, data-video, data-audio and data-scroll. Detailed introduction: 1. data-src attribute. The key to lazy loading is to delay loading images. In HTML, the "" tag is usually used to display images. In lazy loading, you can use the data-src attribute to specify The real URL of the image, in the src attribute of the "" tag, etc.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

JQuery (jq for short) is a powerful JavaScript library that is widely used in web development. It provides many functions and methods to simplify programming, one of which is lazy loading (Lazy Loading). Lazy loading refers to delaying the loading of certain resources during the loading process of web pages to improve the loading speed and user experience of web pages. In JQuery, lazy loading can be achieved by using some specific properties. This article will introduce some commonly used lazy loading properties.

1. data-src attribute:

The key to lazy loading is to delay loading images. In HTML, we usually use the `` tag to display images. In lazy loading, we can use the data-src attribute to specify the real URL of the image. In the src attribute of the `` tag, we can set a default placeholder image URL as the initial value. When certain conditions are met (for example, the image is within the visible area), the value of the data-src attribute is assigned to the src attribute to implement lazy loading of the image.

2. data-background attribute:

In addition to images, lazy loading can also be applied to background images. In CSS, we can use the `background-image` property to set the background image of an element. In lazy loading, we can use the data-background attribute to specify the real URL of the background image. Similarly, we can set a default placeholder image URL as the initial value. When certain conditions are met, the value of the data-background attribute is assigned to the `background-image` attribute to achieve delayed loading of the background image.

3. data-video attribute:

Lazy loading can also be applied to videos. In HTML, we can use the `

4. data-audio attribute:

Similarly, lazy loading can also be applied to audio. In HTML, we can use the `

5. data-scroll attribute:

Lazy loading is usually based on scrolling. The lazy loading function is only triggered when scrolling to a certain position on the page. In JQuery, we can use the data-scroll attribute to specify the scroll position that triggers lazy loading. For example, we can set the data-scroll attribute to "100", which means that lazy loading is triggered when the scroll distance reaches 100 pixels.

Summary:

Lazy loading is a technology that optimizes web page loading speed and user experience, and JQuery provides some attributes to achieve lazy loading. By using the data-src attribute, we can delay loading the image; by using the data-background attribute, we can delay loading the background image; by using the data-video attribute, we can delay loading the video; by using the data-audio attribute, we can delay Load audio; by using the data-scroll attribute, we can set the scroll position that triggers lazy loading. The application of these attributes can help us better control the loading of web page resources and improve web page performance and user experience.

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