for a school project I have to rewrite a Json Object using node fs. I wrote a module and if I use deleteCity or addCity on their own, they work perfectly fine. But when I call both after another only one works. In my JSON File there is one array with 10 objects. In my main javascript file I require my module and call upon addCity and deleteCity functions.
//Modules
const fs = require("fs");
//Variablen
const citiesPath = "./cities.json";
//Funktionen
const deleteCity = (name) => {
fs.readFile(citiesPath, "utf-8", (err, jstring) => {
if (err) {
console.log(err);
}
try {
let data = JSON.parse(jstring);
for (let i = 0; i < data.length; i++) {
if (data[i].Name == name) {
data.splice(i, 1);
}
}
fs.writeFile(citiesPath, JSON.stringify(data, null, 2), (err) => {
if (err) {
console.log(err);
}
});
} catch (error) {
console.log(error);
}
});
};
const addCity = (obj) => {
fs.readFile(citiesPath, "utf-8", (err, jstring) => {
if (err) {
console.log(err);
}
try {
let data = JSON.parse(jstring);
data.push(obj);
fs.writeFile(citiesPath, JSON.stringify(data, null, 2), (err) => {
if (err) {
console.log(err);
}
});
} catch (error) {
console.log(error);
}
});
};
const showCity = () => {
fs.readFile(citiesPath, "utf-8", (err, jstring) => {
if (err) {
console.log(err);
}
try {
let data = JSON.parse(jstring);
console.log(data);
} catch (error) {
console.log(error);
}
});
};
//Exporte
module.exports = {
deleteCity,
addCity,
showCity
};
