remove property object javascript code example

Example 1: javascript remove property from object

var person = {"first_name": "Billy","last_name": "Johnson"};
delete person.last_name; //delete last_name property

Example 2: how to remove a property from an object in javascript

var person = {
        name: "Harry",
        age: 16,
        gender: "Male"
    };
    
    // Deleting a property completely
    delete person.age;
    alert(person.age); // Outputs: undefined
    console.log(person); // Prints: {name: "Harry", gender: "Male"}

Example 3: nodejs delete object key

delete obj.firstname;

Example 4: how to delete a property from a javascript object

var person = {
  firstName:"John",
  lastName:"Doe",
  age:50,
  eyeColor:"blue"
};

delete person.age;  // or delete person["age"];

// Before deletion: person.age = 50, after deletion, person.age = undefined