sending-transactions-with-stacks.js.md

Sending Transactions with Stacks.js

Any Stacks dapp is going to require sending transaction at some point, so how do we do that? We use the @stacks/transactions package.

Again, this particular snippet is pulled from our Hello Stacks tutorial.

When you send Stacks transactions, don't forget to utilize post conditions.

But first, you'll need to install the right NPM package.

yarn add @stacks/transactions

Stacks.js Frontend Code

Assuming you are authenticated, you'll need to import from the network package to connect and import the right Clarity values to convert.

You need to convert values from JS into the right format for Clarity values to ingest. You can view the complete list of types on the Stacks.js docs.

import { StacksMocknet } from "@stacks/network";
import { stringUtf8CV } from "@stacks/transactions";

Let's assume we have a message that we need to send.

Hello this is something I need to say.

const submitMessage = async (e) => {
  e.preventDefault();

  const network = new StacksMocknet();

  const options = {
    contractAddress: "ST1PQHQKV0RJXZFY1DGX8MNSNYVE3VGZJSRTPGZGM",
    contractName: "hello-stacks",
    functionName: "write-message",
    functionArgs: [stringUtf8CV(message)],
    network,
    appDetails,
    onFinish: ({ txId }) => console.log(txId),
  };

  await openContractCall(options);
};

For more details on the different types of transactions you can send, the Stacks.js docs have multiple examples.