In Javascript, how do I determine if my current browser is Firefox on a computer vs everything else?

Question

if(firefox and is on a computer){
alert(\'using firefox on a computer\')
}else{
alert(\"using something else!\");
}

How can I do this?

Answer 1

typeof InstallTrigger !== 'undefined'

It's simple and works well after Quantum but not sure whether this will be future-proof though: https://developer.mozilla.org/en-US/docs/Web/API/InstallTrigger