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# Javascript Multimedia

The JavaScript navigator object includes a child object called plugins. This object is an array, with one entry for each plug-in installed on the browser. The navigator.plugins object is supported only by Netscape, Firefox and Mozilla only.

Here is an example to list down all the plug-on installed with your browser:

    <html>
    <head>
    <title>List of Plug-Ins</title>
    </head>
    <body>
    <table border="1">
    <tr>
        <th>Plug-in Name</th>
        <th>Filename</th>
        <th>Description</th>
    </tr>
    <script language="JavaScript" type="text/javascript">
    for (i=0; i<navigator.plugins.length; i++) {
       document.write("<tr><td>");
       document.write(navigator.plugins[i].name);
       document.write("</td><td>");
       document.write(navigator.plugins[i].filename);
       document.write("</td><td>");
       document.write(navigator.plugins[i].description);
       document.write("</td></tr>");
    }
    </script>
    </table>
    </body>
    </html>

If you are using Mozilla, Firefox or Netscape then Try it yourself.

# Checking for Plug-Ins:

Each plug-in has an entry in the array. Each entry has the following properties:

- name - is the name of the plug-in.

- filename - is the executable file that was loaded to install the plug-in.

- description - is a description of the plug-in, supplied by the developer.

- mimeTypes - is an array with one entry for each MIME type supported by the plug-in.

You can use these properties in a script to find out about the installed plug-ins, and then using JavaScript you can play appropriate multimedia file as follows:

    <html>
    <head>
    <title>Using Plug-Ins</title>
    </head>
    <body>
    <script language="JavaScript" type="text/javascript">
    media = navigator.mimeTypes["video/quicktime"];
    if (media){
      document.write("<embed src='quick.mov' height=100 width=100>");
    }
    else{
      document.write("<img src='quick.gif' height=100 width=100>");
    }
    </script>
    </body>
    </html>

NOTE: Here we are using HTML <embed> tag to embed a multimedia file.

# Controlling Multimedia:

Let us take one real example which works in almost all the browsers:

    <html>
    <head>
    <title>Using Embeded Object</title>
    <script type="text/javascript">
    <!--
    function play()
    {
      if (!document.demo.IsPlaying()){
        document.demo.Play();
      }
    }
    function stop()
    {
      if (document.demo.IsPlaying()){
        document.demo.StopPlay();
      }
    }
    function rewind()
    {
      if (document.demo.IsPlaying()){
        document.demo.StopPlay();
      }
      document.demo.Rewind();
    }
    //-->
    </script>
    </head>
    <body>
    <embed id="demo" name="demo"
        src="http://www.amrood.com/games/kumite.swf"
        width="318" height="300" play="false" loop="false"
        pluginspage="http://www.macromedia.com/go/getflashplayer"
        swliveconnect="true">
    </embed>
    <form name="form" id="form" action="#" method="get">
    <input type="button" value="Start" onclick="play();" />
    <input type="button" value="Stop" onclick="stop();" />
    <input type="button" value="Rewind" onclick="rewind();" />
    </form>
    </body>
    </html>

If you are using Mozilla, Firefox or Netscape then Try it yourself.

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