Embed a javascript game in a react application

Question

I have wrote a very basic video game in pure javascript (no framework).

This video game is composed of a .js file and a very basic html page which contains:

  <script src="js/mygame.js"></script>
  <script>
      $(function() { Game.run() });
  </script>
  <canvas id="game_zone"></canvas>

I want to embed this game in a script reactjs application.

I have tried to put a script tag in rendering return but the script is not loaded.

How should i do ?

Thanks a lot