IE11 defines a CustomEvent object that is different from all the other browsers' CustomEvent object
IE11 defines a CustomEvent object that is different from all the other browsers' CustomEvent object

sdgdsffdsfff/boomerang,lognormal/boomerang,FredXue/boomerang,levexis/boomerang,sdgdsffdsfff/boomerang,levexis/boomerang,FredXue/boomerang,lognormal/boomerang