84669 person learning
152542 person learning
20005 person learning
5487 person learning
7821 person learning
359900 person learning
3350 person learning
180660 person learning
48569 person learning
18603 person learning
40936 person learning
1549 person learning
1183 person learning
32909 person learning
Now we use React to obtain a large amount of data, render it, and display it on the page. How to optimize performance?
人生最曼妙的风景，竟是内心的淡定与从容！
Only render the visible area.
Higher version browsers can use: Page Visibility API
Lower versions can only calculate the scrolling distance by themselves.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Only render the visible area.
Higher version browsers can use: Page Visibility API
Lower versions can only calculate the scrolling distance by themselves.