Get multiple elements by Id

If you can change the markup, you might want to use class instead.

HTML

<a class="test" name="Name 1"></a>
<a class="test" name="Name 2"></a>
<a class="test" name="Name 3"></a>

JS

var elements = document.getElementsByClassName("test");
var names="";
for(var i = 0; i < elements.length; i++) {
    names += elements[i].name;
}
document.write(names);

jsfiddle demo