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# Prototype merge() Method

This method merges object to hash and returns the result of that merge. Duplicate keys will cause an overwrite.

## Syntax:

    hash.merge(object) ;

## Return Value :

- Returns the resultant merged 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 });
      h = h.merge({ version: 1.6, author: 'Sam' });

      h.each(function(pair) {
         alert(pair.key + ' = "' + pair.value + '"');
      });

    }

    </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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