function flashChecker() {
    var hasFlash = 0; //是否安装了flash
    var flashVersion = 0; //flash版本
    var isIE =/*@cc_on!@*/0; //是否IE浏览器
    if (isIE) {
        var swf = new ActiveXObject('ShockwaveFlash.ShockwaveFlash');
        if (swf) {
            hasFlash = 1;
            flashVersion = swf.GetVariable("$version");
        }
    } else {
        if (navigator.plugins && navigator.plugins.length > 0) {
            var swf = navigator.plugins["Shockwave Flash"];
            if (swf) {
                hasFlash = 1;
                flashVersion = swf.description.split(" ");
            }
        }
    }
    return {
        f: hasFlash,
        v: flashVersion
    };
}
 
var fls = flashChecker();
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");

function getFlashVersion() {

   2:     var flashVer = NaN;

   3:     var ua = navigator.userAgent;

   4: 

   5:     if (window.ActiveXObject) {

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

   7: 

   8:         if (swf) {

   9:             flashVer = Number(swf.GetVariable('$version').split(' ')[1].replace(/,/g, '.').replace(/^(d+.d+).*$/, "$1"));

  10:         }

  11:     } else {

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

  13:             var swf = navigator.plugins['Shockwave Flash'];

  14: 

  15:             if (swf) {

  16:                 var arr = swf.description.split(' ');

  17:                 for (var i = 0, len = arr.length; i < len; i++) {

  18:                     var ver = Number(arr[i]);

  19: 

  20:                     if (!isNaN(ver)) {

  21:                         flashVer = ver;

  22:                         break;

  23:                     }

  24:                 }

  25:             }

  26:         }

  27:     }

  28: 

  29:     return flashVer;

  30: }

  31: 

  32: 

  33: var flashVer = getFlashVersion();

  34: 

  35: if (!isNaN(flashVer)) {

  36: 

  37:     document.write('当前flash player 的版本：' + flashVer);   

  38: 

  39: } else {

  40:     document.write('您尚未安装flash播放器');

  41: }