Dismissing fullscreen movie player from <video> tag in UIWebView

SomeWebViewController.m

- (void)exitFullScreenVideo
{
    // Works in iOS, not sure in OS X
    [self.webView stringByEvaluatingJavaScriptFromString:@"Array.prototype.forEach.call(document.getElementsByTagName('video'),function(v){v.webkitExitFullscreen();});"];
    // Didn't work in iOS, works in OS X
    [self.webView stringByEvaluatingJavaScriptFromString:@"if(document.webkitFullscreenElement){document.webkitExitFullscreen();}"];
}