监测当前浏览器Flash是否可用

                    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], 10))) {
                                continue;
                            }
                            flashVersion = parseInt(words[i], 10);
                        }
                    }

<a target="_blank" href="https://get2.adobe.com/cn/flashplayer/">点击启用或下载</a>