error handling express code example
Example 1: how to handle all error of all router in express
if (app.get('env') === 'development') {
app.use(function (err, req, res, next) {
res.status(err.status || 500);
res.render('error.ejs', {
message: err.message,
error: err
});
});
}
app.use(function (err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
Example 2: express error handling
app.use(function (err, req, res, next) {
console.error(err.stack)
res.status(500).send('Something broke!')
})
Example 3: express generator error handling
app.get('/', function (req, res) {
throw new Error('BROKEN')
})
Example 4: err handling express
app.get('/', function (req, res, next) {
fs.readFile('/file-does-not-exist', function (err, data) {
if (err) {
next(err)
} else {
res.send(data)
}
})
})