How to detect browser support for pageShow and pageHide?

问题

How can we do JavaScript object detection for pageShow and pageHide handlers?

if( /* pagehide is supported */ ){
   window.addEventListener('pagehide', exitFunction, false);
}
else{
    window.addEventListener('unload', exitFunction, false);
}

回答1:

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

来源：https://stackoverflow.com/questions/6906146/how-to-detect-browser-support-for-pageshow-and-pagehide