成功警告提示层js插件自动关闭

vt.success("Success Message");
vt.info("Info Message");
vt.warn("Warning Message");
vt.error("Error Message");

vt.success("Success Message",{
  title: undefined,
  position: toastPosition.TopCenter,
  duration: 2000,
  closable: true,
  focusable: true,
  callback: undefined
});