To maintain the state of object on URL in IE/Edge

[mveer-agarwal]

I have modified the firePopState method by adding a Map, which keeps the URL and state of object in case of IE/Edge.

function firePopState(currentUrl) {
 var o = document.createEvent ? document.createEvent('Event') : document.createEventObject();
 var currentUrl = currentUrl;
 var NextUrl = windowLocation.href;

 if (o.initEvent) {
 o.initEvent('popstate', false, false);
 } else {
 o.type = 'popstate';
 }

 if (historyMap[NextUrl]) {
 o.state = historyMap[NextUrl];
 delete historyMap[NextUrl];
 historyObject.replaceState(null, "", NextUrl);
 } else {
 historyMap[currentUrl] = historyObject.state;
 }
 // o.state = historyObject.state;
 // send a newly created events to be processed
 dispatchEvent(o);
 }

Please suggest.