What is the easiest way to connect to Memgraph using Node.js? - memgraphdb

Question

I want to test the creation of an application that uses Node.js and Memgraph. What is the fastest and easiest way for me to test this type of setup?

Answer 1

The easiest way is to use Express.js. Here are the exact steps:
Create a new directory for your application, /MyApp and position yourself in it.
Create a package.json file using npm init
Install Express.js using npm install express --save and the Bolt driver using npm install neo4j-driver --save in the /MyApp directory. Both packages will be added to the dependencies list.
To make the actual program, create a program.js file with the following code:
const express = require("express");
const app = express();
const port = 3000;
var neo4j = require("neo4j-driver");
app.get("/", async (req, res) => {
const driver = neo4j.driver("bolt://localhost:7687");
const session = driver.session();
try {
const result = await session.writeTransaction((tx) =>
tx.run(
'CREATE (a:Greeting) SET a.message = $message RETURN "Node " + id(a) + ": " + a.message',
{
message: "Hello, World!",
}
)
);
const singleRecord = result.records[0];
const greeting = singleRecord.get(0);
console.log(greeting);
} finally {
await session.close();
}
// on application exit:
await driver.close();
});
app.listen(port, () => {
console.log(`Example app listening at http://localhost:${port}`);
});
Once you save the file, you can run your program using node program.js.
For additional details check the official Memgraph documentation.