Prototype - descendants() Method

This method collects all of element's descendants and returns them as an array of extended elements.

Note that all of Prototype's DOM traversal methods ignore text nodes and return element nodes only.

Syntax

element.descendants() ;

Return Value

An array of HTML elements.

Example

<html>
   <head>
      <title>Prototype examples</title>
      <script type = "text/javascript" src = "/javascript/prototype.js"></script>
      
      <script>
         function showElements() {
            var arr = $('father').descendants();
            arr.each(function(node) {
               alert(node.nodeName + ': ' + node.innerHTML);
            });
         }
      </script>
   </head>
   
   <body>
      <p>Click descendants button to see the result.</p>
      <div id = "father">
         <p id = "kid">This is first paragraph</p>
      </div>
      <br />
      
      <input type = "button" value = "descendants" onclick = "showElements();"/>
   </body>
</html>

Output

prototype_element_object.htm