How do I change the text of a span element using JavaScript?

Question

If I have a span, say:

 hereismytext 

How do I use JavaScript to change "hereism

Answer 1

(function ($) {
    $(document).ready(function(){
    $("#myspan").text("This is span");
  });
}(jQuery));

 hereismytext 

user text() to change span text.