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# Prototype gsub() Method

This method returns the string with every occurence of a given pattern replaced by either a regular string, the returned value of a function or a Template string. The pattern can be a string or a regular expression.

## Syntax:

    string.gsub(pattern, replacement);

## Return Value:

- Returns a string.

## Example:

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

    function showResult(){

      var mouseEvents = 'click dblclick mousedown';

      alert( "mouseEvents :" + mouseEvents.gsub(/\s+/, ', ') );

    }

    </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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