Data Attribute
HTML
<a data-abc="123" class="test">DATA 1</a><br>
<a vent="321" class="test">DATA 2</a>
JavaScript
$(function(){
$(".test a.[vent='321']").html('test');
$("[data-abc='123']").html('test2');
});
<a data-abc="123" class="test">DATA 1</a><br>
<a vent="321" class="test">DATA 2</a>
$(function(){
$(".test a.[vent='321']").html('test');
$("[data-abc='123']").html('test2');
});