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检测Flash，QuickTime，RealPlayer，Windows Media Player插件是否安装

2011-02-15 13:41 621 查看

	<html>
	<head>

	<script language="JavaScript">
	<!--
	// initialize a variable to test for JavaScript 1.1.
	// which is necessary for the window.location.replace method
	var javascriptVersion1_1 = false;
	// -->
	</script>


	<script language="JavaScript1.1">
	<!--
	javascriptVersion1_1 = true;
	// -->
	</script>


	<script language="JavaScript">
	<!--

	// initialize global variables
	var detectableWithVB = false;
	var pluginFound = false;


	function goURL(daURL) {
	// if the browser can do it, use replace to preserve back button
	if(javascriptVersion1_1) {
	window.location.replace(daURL);
	} else {
	window.location = daURL;
	}
	return;
	}

	function redirectCheck(pluginFound, redirectURL, redirectIfFound) {
	// check for redirection
	if( redirectURL && ((pluginFound && redirectIfFound) \|\|
	(!pluginFound && !redirectIfFound)) ) {
	// go away
	goURL(redirectURL);
	return pluginFound;
	} else {
	// stay here and return result of plugin detection
	return pluginFound;
	}
	}

	function canDetectPlugins() {
	if( detectableWithVB \|\| (navigator.plugins && navigator.plugins.length > 0) ) {
	return true;
	} else {
	return false;
	}
	}

	function detectFlash(redirectURL, redirectIfFound) {
	pluginFound = detectPlugin('Shockwave','Flash');
	// if not found, try to detect with VisualBasic
	if(!pluginFound && detectableWithVB) {
	pluginFound = detectActiveXControl('ShockwaveFlash.ShockwaveFlash.1');
	}
	// check for redirection
	return redirectCheck(pluginFound, redirectURL, redirectIfFound);
	}

	function detectDirector(redirectURL, redirectIfFound) {
	pluginFound = detectPlugin('Shockwave','Director');
	// if not found, try to detect with VisualBasic
	if(!pluginFound && detectableWithVB) {
	pluginFound = detectActiveXControl('SWCtl.SWCtl.1');
	}
	// check for redirection
	return redirectCheck(pluginFound, redirectURL, redirectIfFound);
	}

	function detectQuickTime(redirectURL, redirectIfFound) {
	pluginFound = detectPlugin('QuickTime');
	// if not found, try to detect with VisualBasic
	if(!pluginFound && detectableWithVB) {
	pluginFound = detectQuickTimeActiveXControl();
	}
	return redirectCheck(pluginFound, redirectURL, redirectIfFound);
	}

	function detectReal(redirectURL, redirectIfFound) {
	pluginFound = detectPlugin('RealPlayer');
	// if not found, try to detect with VisualBasic
	if(!pluginFound && detectableWithVB) {
	pluginFound = (detectActiveXControl('rmocx.RealPlayer G2 Control') \|\|
	detectActiveXControl('RealPlayer.RealPlayer(tm) ActiveX Control (32-bit)') \|\|
	detectActiveXControl('RealVideo.RealVideo(tm) ActiveX Control (32-bit)'));
	}
	return redirectCheck(pluginFound, redirectURL, redirectIfFound);
	}

	function detectWindowsMedia(redirectURL, redirectIfFound) {
	pluginFound = detectPlugin('Windows Media');
	// if not found, try to detect with VisualBasic
	if(!pluginFound && detectableWithVB) {
	pluginFound = detectActiveXControl('MediaPlayer.MediaPlayer.1');
	}
	return redirectCheck(pluginFound, redirectURL, redirectIfFound);
	}

	function detectPlugin() {
	// allow for multiple checks in a single pass
	var daPlugins = detectPlugin.arguments;
	// consider pluginFound to be false until proven true
	var pluginFound = false;
	// if plugins array is there and not fake
	if (navigator.plugins && navigator.plugins.length > 0) {
	var pluginsArrayLength = navigator.plugins.length;
	// for each plugin...
	for (pluginsArrayCounter=0; pluginsArrayCounter < pluginsArrayLength; pluginsArrayCounter++ ) {
	// loop through all desired names and check each against the current plugin name
	var numFound = 0;
	for(namesCounter=0; namesCounter < daPlugins.length; namesCounter++) {
	// if desired plugin name is found in either plugin name or description
	if( (navigator.plugins[pluginsArrayCounter].name.indexOf(daPlugins[namesCounter]) >= 0) \|\|
	(navigator.plugins[pluginsArrayCounter].description.indexOf(daPlugins[namesCounter]) >= 0) ) {
	// this name was found
	numFound++;
	}
	}
	// now that we have checked all the required names against this one plugin,
	// if the number we found matches the total number provided then we were successful
	if(numFound == daPlugins.length) {
	pluginFound = true;
	// if we've found the plugin, we can stop looking through at the rest of the plugins
	break;
	}
	}
	}
	return pluginFound;
	} // detectPlugin


	// Here we write out the VBScript block for MSIE Windows
	if ((navigator.userAgent.indexOf('MSIE') != -1) && (navigator.userAgent.indexOf('Win') != -1)) {
	document.writeln('<script language="VBscript">');

	document.writeln('/'do a one-time test for a version of VBScript that can handle this code');
	document.writeln('detectableWithVB = False');
	document.writeln('If ScriptEngineMajorVersion >= 2 then');
	document.writeln(' detectableWithVB = True');
	document.writeln('End If');

	document.writeln('/'this next function will detect most plugins');
	document.writeln('Function detectActiveXControl(activeXControlName)');
	document.writeln(' on error resume next');
	document.writeln(' detectActiveXControl = False');
	document.writeln(' If detectableWithVB Then');
	document.writeln(' detectActiveXControl = IsObject(CreateObject(activeXControlName))');
	document.writeln(' End If');
	document.writeln('End Function');

	document.writeln('/'and the following function handles QuickTime');
	document.writeln('Function detectQuickTimeActiveXControl()');
	document.writeln(' on error resume next');
	document.writeln(' detectQuickTimeActiveXControl = False');
	document.writeln(' If detectableWithVB Then');
	document.writeln(' detectQuickTimeActiveXControl = False');
	document.writeln(' hasQuickTimeChecker = false');
	document.writeln(' Set hasQuickTimeChecker = CreateObject("QuickTimeCheckObject.QuickTimeCheck.1")');
	document.writeln(' If IsObject(hasQuickTimeChecker) Then');
	document.writeln(' If hasQuickTimeChecker.IsQuickTimeAvailable(0) Then ');
	document.writeln(' detectQuickTimeActiveXControl = True');
	document.writeln(' End If');
	document.writeln(' End If');
	document.writeln(' End If');
	document.writeln('End Function');

	document.writeln('</scr' + 'ipt>');
	}
	// -->
	</script>


	</head>

	<body>

	<script language="JavaScript">

	document.write('<br><b>Can Detect Plugins:</b> ' + canDetectPlugins() + '<br><br>');

	if(canDetectPlugins()) {
	document.write('<b>Supports Shockwave for Director:</b> ' + detectDirector() + '<br>' +
	'<b>Supports Shockwave Flash:</b> ' + detectFlash() + '<br>' +
	'<b>Supports QuickTime:</b> ' + detectQuickTime() + '<br>' +
	'<b>Supports RealPlayer:</b> ' + detectReal() + '<br>' +
	'<b>Supports Windows Media Player:</b> ' + detectWindowsMedia());
	}
	</script>

	<noscript>
	Your browser doesn't support JavaScript, so we can't check for plugins.
	</noscript>


	</body>
	</html>

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