javascript - What is the difference between directly clicking a button to trigger an event and calling click to trigger an event through JS?

Question

Answer 1

The

click of the element should have the same effect as the manual click.

First of all b.className is not b.class

Although I have never used this Clipboard library, literally it is to obtain the .copybutton class through the selector, so you should not be able to obtain it without mounting b on the dom tree. You can try adding document.body.appendChild(b) in front.

Finally, I suggest you ask questions in the same way as the comments above. Post more code and less pictures, which is inconvenient to read.

Answer 2

Um, .click()That’s the abbreviation of jQ, natively you have to call dispatchEvent()…

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Reference

Answer 3

Problem: Native objects and jq objects are mixed up
Change the first line to:
var $b = $('<input type="button" />') Try it

Answer 4

You can bind its click event through the body