Prototype - keys() Method

This method returns an Array of all keys for the hash.

Syntax

hash.keys();

Return Value

Returns an array of the strings having all the keys of the hash.

Example

<html>
   <head>
      <title>Prototype examples</title>
      <script type = "text/javascript" src = "/javascript/prototype.js"></script>
      
      <script>
         function showResult() {
            var h = $H({ name: 'Prototype', version: 1.6 });
            var arr = h.keys();
            
            arr.each(function(item) {
               alert(item );
            });
         }
      </script>
   </head>

   <body>
      <p>Click the button to see the result.</p>
      <br />
      <br />
      <input type = "button" value = "Result" onclick = "showResult();"/>
   </body>
</html>

Output

prototype_hash_processing.htm