A difficult ban on all links?

Question

JavaScript

Friends, how to disable the transition to all links event-wise, ON pure js, WITHOUT jquery,

<a href="https://toster.ru/">toster1</a> 
<a href="https://toster.ru/">toster2</a> 
<a href="https://toster.ru/">toster3</a>

Works only with selection:

document.getElementsByTagName('a')[0].onclick = function() {
  return false;
};

or so

document.getElementByTagName('a')[0].addEventListener('click', function(e) {
   e.preventDefault();
}, false);

why doesn't work for all elements: document.getElementsByTagName('a').onclick = function()........
Tired of this simple and annoying task already! Give advice on the case, please, so as not to look for anything already !?
Here is Mlyn, everything is always simple in jquery:

$(document).on('click','a', function(){ return false; });

everything, a line of code! Native necessarily brain for ** t!

Answer 1

document.addEventListener('click', function(e) {
     if (e.target.tagName === 'A') {
        return e.preventDefault()
     }
})