Providing you can connect your television to your router you can use something like Chromecast.
https://support.google.com/chromecast/answer/6006232?hl=en
You will need to have a smart television to do this.
Otherwise you can use a HDMI lead from your computer to your television providing you have HDMI capabilities on your laptop and your TV.
I use Chromecast but there are other devicesavailable.