toolkit/mozapps/extensions/test/browser/webapi_checkavailable.html


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<!DOCTYPE html>

<html>
<head>
  <meta charset="utf-8">
</head>
<body>
<p id="result"></p>
<script type="text/javascript">
document.getElementById("result").textContent = ("mozAddonManager" in window.navigator);
</script>
</body>
</html>