Prototype - Object keys() Method

This method treats any object as a Hash and fetches the list of its property names.

Syntax

Object.keys(obj);

Return Value

Returns an array of the keys.

Example

<html>
   <head>
      <title>Prototype examples</title>
      <script type = "text/javascript" src = "/javascript/prototype.js"></script>
      
      <script>
         function showResult() {
            var o = { name: 'Prototype', version: 1.6 };
            alert("Object.keys(o).inspect(): " + Object.keys(o).inspect());
         }
      </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_basic_object.htm