How do I determine if my addon is running in firefox or in fennec?

I am making an addon for both firefox and fennec and I want to know if it is running on fennec o开发者_如何转开发r not.

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The global Application object (provided by FUEL) will give you various properties such as name or id that you can use to determine this.

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What sdwilsh said or using nsIXULAppInfo.

If Fennec does support FUEL (I haven't checked), it's a matter of personal preference which one to use. FUEL is supposed to be a simpler-to-use wrapper around the nsI* components.

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You could use document.getElementById("browsers"). In firefox, it's null but in fennec it returns a HTMLDivElement object

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In the current version of the extensions API, the xul-app module exposes a name property which is set to either Firefox or Fennec. This seems to work nicely.

var xul_app = require('xul-app');
var isMobile = (xul_app.name.toLowerCase().indexOf('fennec') > -1);