If you mean low-level interacting with Neo4j as a database client using JavaScript, have a look at the docs for the Javascript driver, that's the place to go.
If you mean high-level "Writing applications with Neo4j underneath" and you're using JavaScript in a browser, then you should check "Getting Started with GRANDStack"
These are different paths though. The first is more for back-end development of database clients, while the second is more for fullstack applications.
