How To Detect Browser Support For Pageshow And Pagehide?

How can we do JavaScript object detection for pageShow and pageHide handlers? if( /* pagehide is supported */ ){ window.addEventListener('pagehide', exitFunction, false); } else

Solution 1:

if ('onpagehide' in window) {
   window.addEventListener('pagehide', exitFunction, false);
} else {
   window.addEventListener('unload', exitFunction, false);
}