TTJ

function townsToJSON(input) {
    input.shift();
    let result = "[";
    for (let row of input) {
        let elements = row.split(' | ');

        let str = elements[0].toString().substring(2);
        str = str.substring(0, 1).toUpperCase() + str.substring(1);

        let obj = {
            Town: str,
            Latitude: Number(parseFloat(elements[1]).toFixed(2)),
            Longitude: Number(parseFloat(elements[2]).toFixed(2))
        }
        result += JSON.stringify(obj) + ","
    }
    result = result.substring(0, result.length - 1);
    result += "]";
    console.log(result);
}

//INPUT
townsToJSON(['| Town | Latitude | Longitude |',
    '| Sofia | 42.696552 | 23.32601 |',
    '| Beijing | 39.913818 | 116.363625 |'
]);

/*
OUTPUT

[{"Town":"Sofia",
  "Latitude":42.7,
  "Longitude":23.32
},
{"Town":"Beijing",
 "Latitude":39.91,
 "Longitude":116.36
}]

// let regex = /\s*\|\s*/;