Question

This way I would normally detect plugins, such as Flash Player:

for (var el in navigator.plugins) {
    if (navigator.plugins[el].name &&
        navigator.plugins[el].name.toLowerCase().indexOf('shockwave') !== -1) {
        console.log(navigator.plugins[el]);
    }
}

I’m not looking for a cross-browser solution or want to test if it is the right way or not. What is the way to test if this plugin is active or not?

Answer 1

Both of the other solutions work to find out if a plugin is installed AND is enabled.

There is currently no way to find out if the plugin is installed but is disabled. Navigator.plugins does not contain disabled plugins which are still installed.