javascript檢查瀏覽器是否支持flash，程序輸出結果：
<script> function flashChecker() { var hasFlash = 0; //是否安裝了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("您安裝了flash,當前flash版本為: " + fls.v + ".x"); else document.write("您沒有安裝flash"); </script>