Can use pushState

Question

Does anyone know of a library that determines if pushState can be used?

I was using this:

if(window.history.pushState){
    window.history.pushState(         


        

Answer 1

Looking at the Modernizer source code this is how it checks for push state:

  tests['history'] = function() {
      return !!(window.history && history.pushState);
  };

So a simple way for you would just be:

var hasPushstate = !!(window.history && history.pushState);

One must first check for the existence of window.history before going two levels deep and that's probably why you were experiencing an error.