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

Like this: Check for Firefox. Or some other browser.

 window.onload = function() {
          //  alert(navigator.userAgent);
            if (navigator.userAgent.indexOf("Firefox") > 0) {
                alert("ff");
            }
        }