Lesson 8: Is "value" parameter inside fund() a global variable?

[nsawit]

From this code inside fund() , we're passing {value: ethers.utils.parseEther(ethAmount)} parameter. We didn't specify it in the declaration, is this a global variable?

const transactionResponse = await contract.fund({
 value: ethers.utils.parseEther(ethAmount),

async function fund() {
  const ethAmount = document.getElementById("ethAmount").value
  console.log(`Funding with ${ethAmount}...`)
  if (typeof window.ethereum !== "undefined") {
    const provider = new ethers.providers.Web3Provider(window.ethereum)
    const signer = provider.getSigner()
    const contract = new ethers.Contract(contractAddress, abi, signer)
    try {
      const transactionResponse = await contract.fund({
        value: ethers.utils.parseEther(ethAmount),
      })
      await listenForTransactionMine(transactionResponse, provider)
    } catch (error) {
      console.log(error)
    }
  } else {
    fundButton.innerHTML = "Please install MetaMask"
  }
}

[alymurtazamemon]

@nsawit Which one ethers or ethAmount ?

ethers is coming from this file import { ethers } from "./ethers-5.6.esm.min.js";
And ethAmount is coming from a text field that we define in the HTML. <input id="ethAmount" placeholder="0.1"> <br>

[nsawit]

@alymurtazamemon There's no textfield yet in the html page,

here we put 'value' argument, which in my understanding, we're calling the fund() from our FundMe contract

const transactionResponse = await contract.fund({
        value: ethers.utils.parseEther(ethAmount),

If we go back to our FundMe contract, fund() function definition

function fund() public payable {
        require(
            msg.value.getConversionRate(s_priceFeed) >= MINIMUM_USD,
            "You need to spend more ETH!"
        );
        // require(PriceConverter.getConversionRate(msg.value) >= MINIMUM_USD, "You need to spend more ETH!");
        s_addressToAmountFunded[msg.sender] += msg.value;
        s_funders.push(msg.sender);
    }

[alymurtazamemon]

@nsawit Yes, value inside {} is to pass amount to our fund function(msg.value).