Dive into a comprehensive step-by-step tutorial on connecting JavaScript to PostgreSQL using node-postgres. Learn how to set up a NodeJS project, install the node-postgres library, and establish a connection to a PostgreSQL database. Master executing queries with promises and parameters, perform insert statements, and explore async/await syntax. Gain insights into the query results object and understand how to implement transactions with begin, commit, and rollback operations. Perfect for developers looking to integrate PostgreSQL databases into their JavaScript applications, this tutorial covers essential concepts and provides practical examples to enhance your database programming skills.