Shulou(Shulou.com)05/31 Report--

This article mainly introduces "how to understand js event delegation". In daily operation, I believe many people have doubts about how to understand js event delegation. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "how to understand js event delegation". Next, please follow the editor to study!

1. Each function is an object that takes up memory. The more objects in memory, the worse the performance. The way to solve the problem of too many events is to delegate events.

2, event delegation bubble, only specify an event handler, you can manage all events of a certain type.

Example

Text1 text2 text3 at this point, the study on "how to understand js event delegation" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.