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Prototype Object keys() Method

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

Syntax:

Object.keys(obj);

Return Value :

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>

To understand it in better way you can Try it yourself.


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