Situation
I have code that takes a local JSON file and parses it into an object. This part works perfectly.
My goal is to create a function that takes two parameters:
Problem
I added a variable (objectName) to pass the property name. I also added [0].fx so I can call the data from the first object only. When I run my code, I get Undefined.
Where did I go wrong?
(in the example code below, I was aiming to get "David")
const localDataObject = (fileName, objectName) => {
const localData = path.join(__dirname, "../", fileName);
fs.readFile(localData, (err, data) => {
const objectData = JSON.parse(data);
const fx = objectName;
console.log(objectData[0].fx);
});
};
localDataObject("./Family.json", "name");
the first object looks like this:
[
{
"name": "David",
"age": "24",
"role": "Studet"
},
]
The solution for your code is :
const localDataObject = (fileName, objectName) => {
const localData = path.join(__dirname, "../", fileName);
fs.readFile(localData, (err, data) => {
const objectData = JSON.parse(data);
const fx = objectName;
console.log(objectData[0][fx]);
});
};
localDataObject("./Family.json", "name");