It's very likely that…

posted on 17.04.2023

…if you’re adding an event listener to an <a> with “#” as the value of the href attribute, the element you're actually looking for is <button>.

<a href="#" onclick="doSomething()">
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</a>

More accessible alternative:

<button onclick="doSomething()">
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</button>

Explanation

The role of <a> is link and the role of <button> is button. Users have certain expectations when they find an element. A general rule of thumb: Use a link if it takes you somewhere else. Use a button if you submit a form or run JavaScript.