The usage of JavaScript event delegation and its benefits brief analysis of _javascript skills

This article briefly introduces the usage of JavaScript event delegation and its benefits for everyone to refer to, the specific contents are as follows

Event delegates: Use the bubbling principle to add events to the parent, triggering the execution effect,
Benefits: Improve performance, and the newly added elements will also have previous events.
Event object: Source of events, regardless of the event, as long as the element you are working on is the source of the event

To get the event source:
IE: window.event.srcElement

Standard under : Event.target target.nodename to determine which label

The code applies as follows:

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">  

The above is the entire content of this article, I hope to help you learn.