如何使用Javascript将新的列表变量插入现有的DynamoDB表项？

npm install aws-sdk

const AWS = require('aws-sdk');

AWS.config.update({
  accessKeyId: 'YOUR_ACCESS_KEY',
  secretAccessKey: 'YOUR_SECRET_ACCESS_KEY',
  region: 'YOUR_REGION'
});

const dynamodb = new AWS.DynamoDB();

const params = {
  TableName: 'YOUR_TABLE_NAME',
  Key: {
    'primaryKey': { S: 'YOUR_PRIMARY_KEY_VALUE' }
  },
  UpdateExpression: 'SET #listAttr = list_append(#listAttr, :newList)',
  ExpressionAttributeNames: {
    '#listAttr': 'yourListAttribute'
  },
  ExpressionAttributeValues: {
    ':newList': { L: [{ S: 'newItem1' }, { S: 'newItem2' }] }
  }
};

dynamodb.updateItem(params, (err, data) => {
  if (err) {
    console.error('Error updating item:', err);
  } else {
    console.log('Item updated successfully:', data);
  }
});