源代码:
<!DOCTYPE html> <html> <head> <script src="http://libs.baidu.com/jquery/1.10.2/jquery.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>
运行结果：