What is the method to identify which event is activated when interacting with a button on a web browser?

Currently utilizing vue, bootstrap 4, and bootstrap-vue.

My main objective is to resolve a visual glitch that emerges when I interact with a button (refer to the animated screenshot provided). This issue is evident at the bottom of the table, where unwanted whitespace is present.

I suspect there is JavaScript involved in altering the table's appearance.

How can I locate the function responsible for triggering onMouseOver when hovering over the "download" button?

https://i.sstatic.net/593iH.gif

UPDATE

Following suggestions, I attempted to replicate the problem using Firefox.

The issue appears to persist, albeit with slight variations as shown in the attached animated screenshot.

My intuition hints towards a potential hiccup within popper.js utilized by bootstrap for injecting elements into the DOM.

The creation of the "download" button was facilitated through bootstrap-vue, hence any additional components might be influencing this situation.

Meanwhile, my endeavor involves redeveloping the button using native bootstrap. Wishing myself luck!

https://i.sstatic.net/DUZCe.gif

Further Update

It appears that popper.js searches for the nearest parent element with the css property overflow: [something]; and calculates the dropdown positioning based on that. This method seems to cause discrepancies between browsers (Chrome vs Firefox) resulting in unnecessary scrollbars and empty spaces.

To rectify this, I opted to abandon the use of popper.js and implement a custom component instead. While not ideal, it serves its purpose for the time being.

Thank you all for your valuable input!

javascriptvue.jsdombootstrap-4popper.js

Answer №1

To begin, I recommend utilizing Firefox's dev tools to examine the DOM. The reason for suggesting Firefox is due to its convenient feature that displays any events attached to a specific element. Take a look at this link for more information.

This tool can identify the following types of events:

  • Standard DOM Events
  • jQuery Events
  • React Events

https://i.sstatic.net/80P0P.png

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