JS如何访问navigator.* 变量

JS如何访问navigator.* 变量

<script type="text/javaScript">
<!--
 
// dw() is just a alias for document.write()
// to make the code shorter
 
function dw(s){
    document.write(s);
}
 
 
/*
** navigator.* values
*/
 
dw('<h2>
navigator.*:</h2>');
 
dw('navigator.appName: ' + navigator.appName);
dw('<br/>');
 
dw('navigator.appVersion: ' + navigator.appVersion);
dw('<br/>');
 
dw('navigator.userAgent: ' + navigator.userAgent);
dw('<br/>');
 
dw('navigator.appCodeName: ' + navigator.appCodeName);
dw('<br/>');
 
dw('navigator.platform: ' + navigator.platform);
dw('<br/>');
 
dw('navigator.cookieEnabled: ' + navigator.cookieEnabled);
dw('<br/>');
 
dw('navigator.javaEnabled(): ' + navigator.javaEnabled());
dw('<br/>');
 
 
 
/*
** Internet Explorer only
** ( these just work in IE )
*/
 
dw('<h2>Internet Explorer only:</h2>');
 
dw('navigator.userLanguage: ');
if (navigator.userLanguage){ dw(navigator.userLanguage); }
else { dw('-'); }
dw('<br/>');
 
dw('navigator.systemLanguage: ');
if (navigator.systemLanguage){ dw(navigator.systemLanguage); }
else { dw('-'); }
dw('<br/>');
 
dw('navigator.browserLanguage: ');
if (navigator.browserLanguage){ dw(navigator.browserLanguage); }
else { dw('-'); }
dw('<br/>');
 
 
 
/*
** Other values
*/
 
dw('<h2>Other values:</h2>');
 
dw('history.length: ' + history.length + '<br/>');
dw('Screen Resolution: '+ screen.width+'x'+screen.height+'<br/>');
 
 
 
/*
** Values that only work in Firefox 
*/
 
dw('<h2>Firefox only:</h2>');
 
dw('navigator.language: ');
if (navigator.language){ dw(navigator.language); }
else { dw('-'); }
dw('<br/>');
 
 
 
/*
** Plugins (navigator.plugins -- Firefox only)
*/
 
dw('<h2>Plugins:</h2>');
 
if (navigator.userAgent.indexOf('Firefox') != -1){
 
    dw('<table border="1">');
 
    for (var i = 0; i < navigator.plugins.length; i++) {
      dw("<tr>");
      dw("<td>" + navigator.plugins[i].name + "</td>");
      dw("<td>" + navigator.plugins[i].description + "</td>");
      dw("<td>" + navigator.plugins[i].filename + "</td>");
      dw("</tr>");
    }
 
    dw("</table>");
 
}
else {
    dw('( Firefox only )');
}
 
//-->
</script>