error handling in express router code example

Example 1: express error handling

app.use(function (err, req, res, next) {
  console.error(err.stack)
  res.status(500).send('Something broke!')
})

Example 2: express generator error handling

app.get('/', function (req, res) {
  throw new Error('BROKEN') // Express will catch this on its own.
})

Example 3: put route error express

//don't forget the "/" in the route targeted URL : 
app.put("/collection/:id", (req, res)=>{
	//route content
})

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Javascript Example

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