Multi tool use

nodejs express mongodb routes const variable

I have followed this guide: https://medium.freecodecamp.org/building-a-simple-node-js-api-in-under-30-minutes-a07ea9e390d2 to help me set up a backend for my react app. I am struggling to understand a particular line of code that's causing me to question my understanding of javascript.

module.exports = function(app, db) {
const collection =
app.post('/notes', (req, res) => {...};
app.put('/notes', (req, res) => {...};
app.delete('/notes', (req, res) => {...};
});
};


So is the const collection variable being set to all three functions? If so, is this something you can do with any 2 or more functions just by writing them back to back? Where exactly should I add helper functions that can be used in one or more of these 3 routing functions? Something like this?

module.exports = function(app, db) {
const collection =
helperFunctionForPost = () => {};
helperFunctionForPutAndDelete = () => {};
app.post('/notes', (req, res) => {...};
app.put('/notes', (req, res) => {...};
app.delete('/notes', (req, res) => {...};
});
};


any info about this is highly appreciated!

1 Answer
1

You can add helper function like:

app.post('/notes', helperFunctionForPost, (req, res) => {...};

app.post('/notes', helperFunctionForPost, (req, res) => {...};

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