is there a mongoose connect error callback

Question

how can i set a callback for the error handling if mongoose isn\'t able to connect to my DB?

i know of

connection.on(\'open\', function () { ... });
         


        

Answer 1

• Handle (catch) the connect exceptions
• Handle other connection errors
• show a message when successfully connected

mongoose.connect(
  "mongodb://..."
).catch((e) => {
  console.log("error connecting to mongoose!");
});
mongoose.connection.on("error", (e) => {
  console.log("mongo connect error!");
});
mongoose.connection.on("connected", () => {
  console.log("connected to mongo");
});