To stop a web page from scrolling to the top when a link is clicked that triggers JavaScript, we call the preventDefault method.
For instance, we write
document.getElementById("#ma_link").addEventListener("click", (e) => {
e.preventDefault();
doSomething();
});
to select the link with getElementById.
Then we call addEventListener to add a click listener to it.
And we call e.preventDefault in the click listener to stop the scrolling.
