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Prototype identify() Method

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This method returns element's id attribute if it exists, or sets and returns a unique, auto-generated id.

Syntax:

element.identify();

Return Value:

Example:

<html>
<head>
<title>Prototype examples</title>
<script type="text/javascript" 
   src="/javascript/prototype.js">
</script>
<script>

function showResult(){
   var str = $('apple').identify();
   alert("Apple's ID: " + str );
   var str = $('apple').next().identify()
   alert("Orange's ID: " + str );
}
</script>
</head>

<body>

  <p>Click the button to see the result.</p>

  <ul>
   <li id="apple">apple</li>
   <li>orange</li>
  </ul>

  <br />
  <input type="button" value="Click" onclick="showResult();"/>

</body>
</html>

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


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