Express js error handling

Question

I\'m trying to get error handling running with express but instead of seeing a response of \"error!!!\" like I expect I see \"some exception\" on the console and then the pr

Answer 1

An example app/guide on error handling is available at https://expressjs.com/en/guide/error-handling.html However should fix your code:

// Require Dependencies
var express = require('express');
var app = express();

// Middleware
app.use(app.router); // you need this line so the .get etc. routes are run and if an error within, then the error is parsed to the next middleware (your error reporter)
app.use(function(err, req, res, next) {
    if(!err) return next(); // you also need this line
    console.log("error!!!");
    res.send("error!!!");
});

// Routes
app.get('/', function(request, response) {
    throw "some exception";
    response.send('Hello World!');
});

// Listen
app.listen(5000, function() {
  console.log("Listening on 5000");
});