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JavaScript

function checkForPepper() {
  return navigator.plugins && _.any(navigator.plugins, function(plugin) {
    return plugin.filename === 'pepflashplayer.dll' || plugin.filename === 'PepperFlashPlayer.plugin';
  });
}
       
       
alert ('Pepper enabled: '+ checkForPepper());

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JSFiddle - React, Tailwind, and code Playground

JavaScript

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Use pre-released features

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Console