web3_utils.html

<script src="https://cdn.jsdelivr.net/gh/ethereum/web3.js/dist/web3.min.js"></script>

<script>

var web3_instance;

var web3_utils = {

    init_web3: function() {

      web3_instance = new Web3(window.ethereum);
	  return web3_instance;
   },

   new_contract: function(abi, addr) {

	   return new web3_instance.eth.Contract(abi, addr);
   },

  debug: function(obj) {

    console.log(JSON.stringify(obj));
	  console.log(obj);
  },

};

</script>