What is lazy loading of data

Lazy loading of data is a technique that allows data to be loaded only when needed, thereby reducing initial load time and memory footprint. This technique is especially common in single-page applications, where page content often needs to be loaded and updated dynamically. The principle of lazy loading of data is to divide the data according to its visibility and importance, load the data in the visible area and important area first, and load the data in other areas when needed. This method can reduce requests to servers and networks, reduce traffic consumption, and improve user experience.

Operating system for this tutorial: Windows 10 system, Dell G3 computer.

Lazy loading of data is a technique that allows data to be loaded only when needed, thereby reducing initial load time and memory footprint. This technique is especially common in single-page applications, where page content often needs to be loaded and updated dynamically.

In lazy loading of data, the data is usually separated from the view, and relevant data is only loaded when the user scrolls to a specific section or performs a specific action. This method can reduce the initial page loading time and improve the response speed, especially for users with mobile devices and poor network conditions, which can significantly improve the user experience.

The principle of lazy loading of data is to divide the data according to its visibility and importance. Data in visible areas and important areas are loaded first, and data in other areas are loaded when needed. This method can reduce requests to servers and networks, reduce traffic consumption, and improve user experience.

In actual use, lazy loading of data can be implemented in a variety of ways, such as using Ajax to load data asynchronously, using the Intersection Observer API to monitor the visible area, etc.

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