Window.navigator or just a navigator?

Question

Which object should I use to determine browser information?

alert(window.navigator.userAgent); 

or

 alert(navigator.userAgent); 

Are there any recommendations regarding multi-browser compatibility of the solution?

Answer 1

Or it does not really matter. navigator is a property of the window object, but all properties of the window object are available as global variables.

 navigator === window.navigator; //-> true 

As a personal preference, I always write window.propertyName for the explicit properties of the window object.

Answer 2

you can use this ....

  alert("You're using " + navigator.appName); 

for pls links follow this navigator link

Answer 3

I just ran into a problem in Firefox where a link to navigator.userAgent throws an NS_ERROR_NOT_AVAILABLE exception, while window.navigator.userAgent just works. It seems to be best to use window.navigator.