C#•5mo ago

How to check if element exists in html cefsharp

I tried this but it throws an exception that the response is null

string getElementByName = @"document.getElementsByName(""media"")[0];";
private async void jsgetval(string script)
{
    responseResult = "";
    JavascriptResponse response = await ytBrowser.EvaluateScriptAsync(script);
    responseResult = response.Result.ToString();
    Console.WriteLine(responseResult);
}

string getElementByName = @"document.getElementsByName(""media"")[0];";
private async void jsgetval(string script)
{
    responseResult = "";
    JavascriptResponse response = await ytBrowser.EvaluateScriptAsync(script);
    responseResult = response.Result.ToString();
    Console.WriteLine(responseResult);
}