Before following this tutorial, you should follow the installation guide to set up and test your Solidity++ development environment. You'll also need to have set up a both a "personal" and a "developer" wallet, see the guide here.
Launch a terminal and open the folder containing your HelloWorld.solpp file. Here you can install Vite.js:
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yarn add @vite/vitejs-ws @vite/vitejs
(note: node.js and yarn are required)
The following code demonstrates using Vite.js to interact with a contract. The code calls the sayHello function, sends a transaction, and receives a response. Save this as test_contract.js.
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const{WS_RPC}=require('@vite/vitejs-ws');const{ ViteAPI, wallet, utils, abi, accountBlock, keystore }=require('@vite/vitejs');// test accountconst seed ="turtle siren orchard alpha indoor indicate wasp such waste hurt patient correct true firm goose elegant thunder torch hurt shield taste under basket burger";// connect to nodeconst connection =newWS_RPC('ws://localhost:23457');const provider =newViteAPI(connection,()=>{
console.log("client connected");});// derive account from seed phraseconst myAccount = wallet.getWallet(seed).deriveAddress(0);const recipientAccount = wallet.getWallet(seed).deriveAddress(1);// fill in contract infoconstCONTRACT={
binary:'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',// binary code
abi:[{"constant":false,"inputs":[{"name":"addr","type":"address"}],"name":"sayHello","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"addr","type":"address"},{"indexed":false,"name":"amount","type":"uint256"}],"name":"transfer","type":"event"}],// JSON ABI
offChain:'',// binary offchain code
address:'',// contract address}CONTRACT.address ='vite_c1905cc76eaa02c02c564b2afa0639fab53a303cbef0599bd2';asyncfunctionreceiveTransaction(account){// get the first unreceived txconst data =await provider.request('ledger_getUnreceivedBlocksByAddress', account.address,0,1);if(!data ||!data.length){
console.log('[LOG] No Unreceived Blocks');return;}// create a receive txconst ab = accountBlock.createAccountBlock('receive',{
address: account.address,
sendBlockHash: data[0].hash
}).setProvider(provider).setPrivateKey(account.privateKey);await ab.autoSetPreviousAccountBlock();const result =await ab.sign().send();
console.log('receive success', result);}asyncfunctionsendTx(account, address ,amount){const ab = accountBlock.createAccountBlock('send',{
address: account.address,
toAddress: address,
amount
}).setProvider(provider).setPrivateKey(account.privateKey);await ab.autoSetPreviousAccountBlock();const result =await ab.sign().send();
console.log('send success', result);}asyncfunctioncallContract(account, methodName, abi, params, amount){const block = accountBlock.createAccountBlock('callContract',{
address: account.address,
abi,
methodName,
amount,
toAddress:CONTRACT.address,
params
}).setProvider(provider).setPrivateKey(account.privateKey);await block.autoSetPreviousAccountBlock();const result =await block.sign().send();
console.log('call success', result);}asyncfunctionmain(){// call the contract we deployed and send over 150 VITEawaitcallContract(myAccount,'sayHello',CONTRACT.abi,[recipientAccount.address],'150000000000000000000');// send 10 VITE awaitsendTx(myAccount, recipientAccount.address,'10000000000000000000');// recipient receives the txawaitreceiveTransaction(recipientAccount);}main().then(res=>{}).catch(err=> console.error(err));
You now should modify test_contract.js to match your own contract. The following items need to be changed:
The connection should be set to the test net:
const connection = new WS_RPC('wss://buidl.vite.net/gvite/ws');
The seed should be set to your dev wallet's mnemonic phrase:
