Append data to localStorage object

Question

I\'m trying, unsuccessfully, to add a new object to a current localStorage object. Instead of, at the end, having two sets of data in localStorage, I get the last one. Any insig

Answer 1

You are using Object.assign() wrong. See here for info about it.

Do you really need newStudent2 to be an array of a single object? If not you can simply do stored.push(newStudent2), where newStudent2 is an object and not an array with a single object.

So, something like:

var students = [];

// add the first student
// Notice how the student is now an object and not an array containing an object.
var newStudent = {
     "name":        "John",
     "age":         21,
     "nationality": "Spanish"
 };

students.push(newStudent);

localStorage.setItem("students", JSON.stringify(students));


// Retrieve the object from storage to add a new student
var retrievedObject = localStorage.getItem("students");
var stored          = JSON.parse(retrievedObject);

// add a new student
// Notice how the student is now an object and not an array containing an object.
var newStudent2 = {
    "name":        "Mary",
    "age":         20,
    "nationality": "German"
};

stored.push(newStudent2);

// Update the storage
localStorage.setItem("students", JSON.stringify(stored));
var result = localStorage.getItem("students");

console.log(result);