javascript-sdk.md

JavaScript SDK

GitHub: https://github.com/FunctionX/fx-js-sdk

fxwallet version (minimum): v2.0

WalletConnectId: 39778

CHAIN_ID: fxevm

Overview

Like the python SDK, Function X's JavaScript SDK: fx-js-sdk, can also be used to prototype, develop, and deploy blockchain solutions using JavaScript.

Usage Examples

Get Accounts

{% code lineNumbers="true" %}

export function getAccountRequest(chainIds) {
  return {
    id: payloadId(),
    jsonrpc: '2.0',
    method: 'functionx_wc_accounts_v1',
    params: chainIds,
  };
}

{% endcode %}

Example

{% code lineNumbers="true" %}

const request = getAccountRequest([CHAIN_ID,CHAIN_ID]);
connector.sendCustomRequest(request)
  .then((accounts) => {
    setAccounts(accounts);
    console.log(accounts.length == 1);
  }).catch((error) => {
    console.error(error);
  });

{% endcode %}

Result

[name, algo, publicKey, addressByte, bech32Address]

Sign Transactions (amino)

Sign transaction using FunctionX Mobile Wallet via Wallet Connect

• signer: bech32Address

Example

{% code lineNumbers="true" %}

import {
  makeSignDoc as makeAminoSignDoc,
  serializeSignDoc
} from "@cosmjs/amino"
import { fromUtf8 } from "@cosmjs/encoding"

const signDoc = makeAminoSignDoc(messages, fee, chainId, memo, accountNumber, sequence)
const signBytes = serializeSignDoc(signDoc)
const signData = fromUtf8(signBytes)
     
connector.sendCustomRequest({
    id: payloadId(),
    jsonrpc: '2.0',
    method: 'functionx_wc_sign_tx_v1',
    params: [chainId, signer, signData],
  })
  .then((response) => {
    const signed = _.get(response, '0.signed');
    const signature = _.get(response, '0.signature');
    return broadcastTx(signed, signature);
  }).then((result) => {
    const code = _.get(result, 'code');
    if (code === 0) {
      const txHash = _.get(result, 'txhash');
      console.log(txHash);
    } else {
      const rawLog = _.get(result, 'raw_log');
      console.error(rawLog);
    }
  })

{% endcode %}