js判斷當前電腦是否安裝flash外掛
阿新 • • 發佈:2018-11-17
if (!testingFlash()) { dialog("您的瀏覽器還沒有安裝flash外掛或未允許本站執行,導致上傳按鈕無法載入,請檢查flash外掛後重試!"); } /** * 返回true表示已經安裝了Flash * 返回flase表示沒有安裝Flash * @returns {Boolean} */ function testingFlash(){ var fls = flashChecker(); if(fls.f) { return true; }else{ return false; } } 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 }; }