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# Prototype Enumerable size() Method

This method returns the size of the enumeration.

## Syntax:

    Iterator.size();

## Return Value :

- Returns the size of the enumeration.

## Example:

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

    <script>

    function showResult(){

      var arr = $R(1, 10).select(function(n) { return 0 == n % 2; });

      alert("Test 1 : " + $R(1, 10).size() );
      // Returns 10

      alert("Test 2 : " + ['hello', 42, true].size() );
      // Returns 3

      alert("Test 3 : " + $H().size() );
      // Returns 0

    }

    </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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