如何判断浏览器是否支持flash

Question

支持flash的浏览器呈减少的趋势，如何判断浏览器是否支持flash。

Answer 1

如果不需要检查版本的话，代码可以精简一下：

var hasFlash = false;
try {
    hasFlash = Boolean(new ActiveXObject('ShockwaveFlash.ShockwaveFlash'));
} catch(exception) {
    hasFlash = ('undefined' != typeof navigator.mimeTypes['application/x-shockwave-flash']);
}

Answer 2

百度一搜就找到啦，直接扒下来，亲测有用：

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");