How to understand js event delegation

This article mainly explains "how to understand js event delegation". The content of the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to understand js event delegation".

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 thank you for your reading, the above is the content of "how to understand js event delegation", after the study of this article, I believe you have a deeper understanding of how to understand js event delegation, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!