JAVASCRIPT

wrapping a span tag with an a tag with a href target same as the text of the span

$(".myClass").each( function() {
  $(this).wrap('<a href="http://www.example.com/' + $(this).text() + '" onclick="myfunc();" />');
});

console.log($(".myClass").parent())

wrapping a span tag with an a tag with a href target same as the text of the span

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>

<span class='myClass'>aaa</span>
<span class='myClass'>bbb</span>
<span class='myClass'>ccc</span>
<span class='myClass'>ddd</span>