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ConsenSys Academy
The educational core of the Ethereum movement
Published
Edited
Nov 8, 2019
3 stars
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ethereum.enable()
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Web3js = require("https://cdn.jsdelivr.net/gh/ethereum/web3.js@1.2.0/dist/web3.min.js")
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web3js = new Web3js(web3.currentProvider)
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transaction = ({
from: web3js.givenProvider.selectedAddress,
to: "0x07D62a36D35261AfEcF6cb89382D393a398edc1a",
value: web3js.utils.toWei("0.01", "ether")
})
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web3js.eth.sendTransaction(transaction)
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web3js.eth.getBalance(web3js.givenProvider.selectedAddress)
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ABI = [
{
"constant": false,
"inputs": [
{
"internalType": "uint256",
"name": "x",
"type": "uint256"
}
],
"name": "set",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"anonymous": false,
"inputs": [
{
"indexed": false,
"internalType": "uint256",
"name": "newValue",
"type": "uint256"
},
{
"indexed": false,
"internalType": "address",
"name": "updatedBy",
"type": "address"
}
],
"name": "storageUpdate",
"type": "event"
},
{
"constant": true,
"inputs": [],
"name": "get",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
}
]
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simpleStorage = new web3js.eth.Contract(ABI, simpleStorageAddress)
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simpleStorage.methods.get().call()
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simpleStorage.methods.set(42).send({from: web3js.givenProvider.selectedAddress})
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simpleStorage.events.storageUpdate((error, event) =>console.log(event))
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