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snippets fixes: Metamask connection, BigNumber #1

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snippets fixes: Metamask connection, BigNumber #1

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9 changes: 6 additions & 3 deletions LEARN.md
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Original file line number Diff line number Diff line change
Expand Up @@ -345,13 +345,15 @@ Aaaand again, let's handle the logic in ``` handleSubmit ```, change it to the f
async handleSubmit(event) {
event.preventDefault()
const provider = new ethers.providers.Web3Provider(window.ethereum)
await provider.send("eth_requestAccounts", [])
const signer = provider.getSigner()
const contract = new ethers.Contract(
ADDRESS,
ABI,
signer
)
let numberOfTokensToSend = this.state.numOfTokens * (10 ** DECIMALS)
let numberOfTokensToSend =
ethers.BigNumber.from(10).pow(DECIMALS).mul(this.state.numOfTokens)
await contract.transfer(this.state.receiver, numberOfTokensToSend)
}
```
Expand Down Expand Up @@ -409,15 +411,16 @@ In the contract, we require that a user sends 1 Gwei to call ``` buy ```. How to
async handleSubmit(event) {
event.preventDefault()
const provider = new ethers.providers.Web3Provider(window.ethereum)
await provider.send("eth_requestAccounts", [])
const signer = provider.getSigner()
const contract = new ethers.Contract(
ADDRESS,
ABI,
signer
)
let numberOfTokensToBuy = this.state.numOfTokens * (10 ** DECIMALS)
let numberOfTokensToBuy = ethers.BigNumber.from(10).pow(DECIMALS).mul(this.state.numOfTokens)
const overrides = {
value: ethers.utils.parseEther("0.000000001")
value: ethers.utils.parseEther("0.000000001").mul(this.state.numOfTokens)
}
await contract.buy(numberOfTokensToBuy, overrides)
}
Expand Down