<a class = "id_1"><a>
<a class = "id_2"><a>
<a class = "id_3"><a>
<a class = "id_3"><a>
<a class = "id_4"><a>
<a class = "id_5"><a>
<a class = "id_6"><a>
$(document).on('click', 'a[class^="id"]', function(e) {
e.preventDefault();
console.log(e.target);
console.log(this);
alert('Вы кликнули по ссылке с классом ' + this.className);
});
$( "a[class^=id_]" ).click(function(e) {
var $clicked_el = $(e.currentTarget);
var clicked_class = e.currentTarget.className;
});