JS判断是否安装flash player及当前版本

function flashChecker() {

    var hasFlash = 0;　　　　 //是否安装了flash

    var flashVersion = 0;　　 //flash版本

    if(document.all) {

        var swf = new ActiveXObject('ShockwaveFlash.ShockwaveFlash');

        if(swf) {

            hasFlash = 1;

            VSwf = swf.GetVariable("$version");

            flashVersion = parseInt(VSwf.split(" ")[1].split(",")[0]);

        }

    } else {

        if(navigator.plugins && navigator.plugins.length > 0) {

            var swf = navigator.plugins["Shockwave Flash"];

            if(swf) {

                hasFlash = 1;

                var words = swf.description.split(" ");

                for(var i = 0; i < words.length; ++i) {

                    if(isNaN(parseInt(words[i]))) continue;

                    flashVersion = parseInt(words[i]);

                }

            }

        }

    }

    return {

        f: hasFlash,

        v: flashVersion

    };

}

  

var fls = flashChecker();

var s = "";

if(fls.f) document.write("您安装了flash,当前flash版本为: " + fls.v + ".x");

else document.write("您没有安装flash");