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This article introduces the relevant knowledge of "how to achieve event concept and event monitoring in js". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

JavaScript gives us the ability to create dynamic pages, and each element in the page can generate some event that triggers the JavaScript function. We can think of an event as a behavior that can be detected by JavaScript.

Js event concept

Change the default behavior of the HTML element using the return value

Most HTML elements contain their own default behaviors, such as hyperlinks, submit buttons, and so on. We can block its default behavior by adding returnfalse to the binding event

1. Bind HTML element attributes

two。 Bind DOM object properties

Document.getElementById ("btn1"). OnClick=test;//test function name

Js event snooping

Copy the code

00

Functiontest1 () {

Alert ("bind HTML element attributes")

}

Functiontest2 () {

Alert ("bind DOM object properties")

}

Test 2

Document.getElementById ("test2"). Nclick=test2

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