How to Update Object Key Values Using Javascript?

ByMuhammad

In JavaScript, you can update object key values by accessing the object using the key and then assigning a new value to it. Here’s an example:

let person = {
  name: "John",
  age: 30,
  city: "New York"
};

person.age = 31;
person.city = "Los Angeles";

console.log(person); // Output: { name: "John", age: 31, city: "Los Angeles" }

In this example, the person object has three key-value pairs: name, age, and city. To update the value of the age and city keys, we simply access the object using dot notation and assign new values to them.

Alternatively, you can also update object key values using bracket notation. Here’s an example:

let person = {
  name: "John",
  age: 30,
  city: "New York"
};

person["age"] = 31;
person["city"] = "Los Angeles";

console.log(person); // Output: { name: "John", age: 31, city: "Los Angeles" }

In this example, we use bracket notation to access the age and city keys and assign new values to them.

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