How javascript removes events

This article mainly introduces javascript how to remove events, the article is very detailed, has a certain reference value, interested friends must read it!

Javascript methods to remove events: 1, create a click event; 2, register the event by addEventListener; 3, use functions to encapsulate pop-up boxes and remove events.

This article operating environment: windows7 system, javascript1.8.5 version, Dell G3 computer.

How does javascript remove events?

First, let's write a traditional click event

Then make the event null in the event and no more clicks will be performed.

Then register the event in the addEventListener way

Use functions to encapsulate pop-up boxes and remove events.

Open the browser and click and it won't pop up again.

Summary: if the event is registered in the traditional way, you can directly make the event empty, and if it is an event registered by addEventListener, you can remove the event through the function.

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