njseries_01_03.js

app.route((router) => {

    router.get('/template', (req, res) => {
        let data = {title: 'Home', test:true, items: ['Evan', 'John', 'Jane']}
        res.render('index.html', data)
    })

    // routing with optional parameter
    router.get('/hello/:name?', (req, res) => {
        let name = req.params['name'] || 'world'
        res.end(`Hello ${name}!`)
    })
    
    // route prefixing with group
    router.group('/settings', (router) => {
        router.get('/basic', (req, res) => {
            res.end('Basic Settings')
        })
      
        router.get('/notification', (req, res) => {
            res.end('Notification Settings')
        })
    })

    // example of  midleware handler chaining
    router.get('/chain/example', [ 
            (req, res, next) => {
                req.chain = 'one ->'
                next()
            }, 
            (req, res, next) => {
                req.chain = `${ req.chain} two ->`
                next()
            }, 
            (req, res) => {
                res.end(`${req.chain} three`)
            }
        ]
    )
})