Acceptable answers for 'Make every link on the page alert with 'Hello' and not navigate'

a-alert-jquery.js

// Only partially acceptable, raw JS/DOM knowledge is preferred
$('a').on('click', function () {
    alert('Hello');
    return false; // or take in event argument and use event.preventDefault()
});

a-alert-recursive.js

var list = document.getElementsByTagName('a');
(function namedFunction(listOfLinks, i) {
    var l = listOfLinks[i];

    if (l === void 0) { // can also use typeof l === 'undefined', but no comparison to undefined
        return;
    }

    l.addEventListener(
        'click',
        (function () { 
            return function(e) {
                alert('Hello');
                e.preventDefault();
            }; 
        })(),
        false);
    namedFunction(listOfLinks, i + 1);
})(list, 0);

a-alert.js

var links = document.getElementsByTagName('a');

for (var i = 0, j = links.length; i < j; i++) {
    links[i].addEventListener('click', (function() {
        return function(e) {
            alert('Hello');
            e.preventDefault();
        };
    })(), false);
}