javascript – node.js server not responding, and not running

I’m pretty new to node and I’m trying to create a simple server for iOS notes app but when I type in node server.js in command prompt nothing happens.

`

//CREATE A NOTE
//Post request
app.post("/create", (req, res) => {

    var Note = new Data({

        note: req.get("note"),
        title: req.get("title"),
        date: req.get("data"),
    })

    note.save().then(() => {
        if (note.isNew == false){
            console.log("Save data!")
            res.send("Saved data")
        }else {
            console.log("Failed to save data")
        }
    })
})

// http://10.11.210.1:8081/create
var server = app.listen(8081, "10.11.210.1", function(){
    console.log("Server is running!")
})

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