Multiple methods to determine whether the client browser has the Flash plug-in installed_javascript skills

Commonly used methods:

Copy code The code is as follows: var swf = new ActiveXObject('ShockwaveFlash.ShockwaveFlash'); (swf) ? document.writeln('You have installed the plug-in') : document.writeln( 'You do not have the plugin installed'); // --> [code] Dynamic loading. [code] codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6 ,0,0,0" WIDTH="120" HEIGHT="60" id="468x60" ALIGN="" VIEWASTEXT> function addFlash() { mFlash.movie="http: //www.jb51.net/images/ad/WIBU.swf"; mFlash.Play(); } There are many detections The PLUGIN method, because you cannot solve this problem with just one method, there are so many methods 1. Built-in detection IE on NN and MAC cannot use the following detection, only on WIN IE can 1. Install on demand If the install on demand option in IE's Tools - Internet Options - Advanced - Browsing is enabled, Flash will be downloaded from the MS website when the browser needs it. Player ActiveX control If it does not take effect and you enter the webpage directly without installing PLUGIN, you will see a small ICON like a cracked square. Clicking it can also take you to install it 2. In HTML The classid and codebase attributes in the OBJECT tag classid is the identification of ActiveX control, for example, FLASH PLAYER is: clsid:D27CDB6E-AE6D-11cf-96B8-444553540000 codebase is the address to download the plug-in, for example FLASH4 (if the browser detects that the number after version is lower than the version you already have, it will not install it): http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab# version=4,0,2,0 These HTML tags will be automatically added when you insert them into PUBLIC or DW in FLASH The browser will detect these tags when executing them 2. Use SCRIPT This method of detection is to get rid of the limitations of the previous method, such as the behavior called "Check Plug-in" in DW. This method still cannot be used on some machines that cannot execute SCRIPT, such as Versions before IE4.5 on MAC, IE on WIN31. There are also some users who turn off SCRPIT execution. 3. Use FLASH to detect If the user doesn’t even execute SCRPIT, they can only use this trick. This is also the method used by MM herself. Make a detection HTML, put a SWF in it, with only one sentence GetURL ("your real page") At the same time, put of the HTML ="10; URL="Page where FLASH is not installed"> If the SWF does not take you to the real page within 10 seconds, the detected HTML will take you to the page where FLASH is not installed 4. The last method is to let users choose This is also the most common. Many websites have an entrance page, and below there is a small ICON for installing PLUGIN Copy code The code is as follows: Private i, x, MM_FlashControlVersion On Error Resume Next x = null MM_FlashControlVersion = 0 var Flashmode FlashMode = False For i = 5 To 1 Step -1 Set x = CreateObject("ShockwaveFlash.ShockwaveFlash." & i) MM_FlashControlInstalled = IsObject(x) If MM_FlashControlInstalled Then MM_FlashControlVersion = CStr(i) Exit For End If Next FlashMode = (MM_FlashControlVersion >= 5) If FlashMode = True Then document.write "有FLASH的HTML" Else document.write "无FLASH的HTML" End If

FlashMode = 0; if (navigator.plugins && navigator.plugins.length > 0) { if (navigator.plugins["Shockwave Flash"]) { var plugin_version = 0; var words = navigator.plugins["Shockwave Flash"].description.split(" "); for (var i = 0; i { if (isNaN(parseInt(words[i]))) continue; plugin_version = words[i]; } if (plugin_version >= 5) { var plugin = navigator.plugins["Shockwave Flash"]; var numTypes = plugin.length; for (j = 0; j { mimetype = plugin[j]; if (mimetype) { if (mimetype.enabledPlugin && (mimetype.suffixes.indexOf("swf") != -1)) FlashMode = 1; // Mac wierdness if (navigator.mimeTypes["application/x-shockwave-flash"] == null) FlashMode = 0; } } } } } if (FlashMode == 1) { document.write('有FLASH的HTML');} else { document.write('无FLASH的HTML'); } // end JS detection --> 通过以下的Javascript脚本，可以检测当前浏览器是否安装Flash插件以及插件的版本是否满足要求。 复制代码 代码如下: // U can change this number to check specific version of flash var MM_contentVersion = 6; var plugin = (navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"]) ? navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin : 0; if ( plugin ) { var words = navigator.plugins["Shockwave Flash"].description.split(" "); for (var i = 0; i if (isNaN(parseInt(words[i]))) continue; var MM_PluginVersion = words[i]; } var MM_FlashCanPlay = MM_PluginVersion >= MM_contentVersion; } else if( navigator.userAgent && navigator.userAgent.indexOf("MSIE")>=0 && (navigator.appVersion.indexOf("Win") != -1) ) { //FS hide this from IE4.5 Mac by splitting the tag document.write(' n'); document.write('on error resume next n'); document.write('MM_FlashCanPlay = ( IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash." & MM_contentVersion)))n'); document.write(' n'); } if ( MM_FlashCanPlay ) { alert("Flash Detection OK. U can play."); } else{ alert("Flash Detection Failed. Need Download specific version."); } //-->

//自己总结的 //IE中判断是否安装插件 var swf; function IE_Flash() { try { var swf=new ActiveXObject("ShockwaveFlash.ShockwaveFlash"); alert("已安装插件"); } catch(e) { alert("没有安装插件"); } } //FireFox,Chrome中判断是否安装插件 function FF_or_Chrome_Flash() { var swf=navigator.plugins["Shockwave Flash"]; (swf)?alert("已安装插件"):alert("没有安装插件"); }