A sample Dapp function call button

        $(".new-goods-submit-button").on('click',function(){
          console.log('submitting goood');

          //get hash of the good
          var file_unique_hash = $("#good_file_input").data('uniquehash');


          var file_name = "canoe";
          var file_description = "a wooden boat";

          var file_quantity = 5;
          var file_price = 500;

          //execute smart contract func

          var from = web3.eth.accounts[0];
          //web3 call


          console.log('from addr ')

          console.log(from)


            let contract_abi = parseEtherGoodsABI();

            console.log('contract_abi');
            console.log(contract_abi);


            var EtherGoodsContract = web3.eth.contract(contract_abi);
            var contractInstance = EtherGoodsContract.at('0xdd6fa24be361432c0359ab7f2bde155a4fc31ce5');


            // suppose you want to call a function named myFunction of myContract
            var dataBundle = contractInstance.registerNewGood.getData(from,file_unique_hash,file_name,file_description,file_quantity,file_price);
            console.log(dataBundle)

             web3.eth.estimateGas({
                    to: "0xdd6fa24be361432c0359ab7f2bde155a4fc31ce5",
                    data: "0xc6888fa10000000000000000000000000000000000000000000000000000000000000003"
                },function(error,result){
                    console.log(result);
                });

            //finally paas this data parameter to send Transaction
            web3.eth.sendTransaction({to:'0xdd6fa24be361432c0359ab7f2bde155a4fc31ce5', from: from, data: dataBundle},function(error,result){
              if(error)
              {
                console.log(error);
              }
                console.log(result);
            });



        })