如何使用 getSlot

# Replace <api-key> with your Helius API key
curl https://mainnet.helius-rpc.com/?api-key=<api-key> -X POST -H "Content-Type: application/json" -d \
  '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getSlot"
  }'

// Replace <api-key> with your Helius API key
const { Connection } = require('@solana/web3.js');

async function getCurrentSlot() {
  const connection = new Connection('https://mainnet.helius-rpc.com/?api-key=<api-key>');
  try {
    const slot = await connection.getSlot();
    console.log('Current slot (default commitment):', slot);
  } catch (error) {
    console.error('Error fetching current slot:', error);
  }
}

getCurrentSlot();

# Replace <api-key> with your Helius API key
curl https://mainnet.helius-rpc.com/?api-key=<api-key> -X POST -H "Content-Type: application/json" -d \
  '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "getSlot",
    "params": [
      {
        "commitment": "confirmed"
      }
    ]
  }'

// Replace <api-key> with your Helius API key
const { Connection } = require('@solana/web3.js');

async function getConfirmedSlot() {
  const connection = new Connection('https://mainnet.helius-rpc.com/?api-key=<api-key>');
  try {
    const slot = await connection.getSlot('confirmed');
    console.log('Current slot (confirmed commitment):', slot);
    // Note: For @solana/web3.js v1.30.0 and later, you can pass commitment directly.
    // For older versions or more complex options, use an object:
    // const slot = await connection.getSlot({ commitment: 'confirmed' });
  } catch (error) {
    console.error('Error fetching confirmed slot:', error);
  }
}

getConfirmedSlot();