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<!DOCTYPE html> <html> <head> <script src="/lib/jquery-1.12.2.min.js"></script> <script> $(document).ready(function(){ var treeTraversal = $("div").find("p, span").map(function(){ return this.tagName;}).get().join(", "); $("div").after("<h2>" + treeTraversal + "<h2>"); }); </script> </head> <body> <div> This is a div element. My children are: <p> <span><span></span></span> </p> </div> </body> In this example, we return all descendant elements of div. </html>