delete object js code example

Example 1: javascript delete key from object

let person = {
  firstname: 'John',
  lastname: 'Doe'
}

console.log(person.firstname);
// expected output: "John"

delete person.firstname;

console.log(person.firstname);
// expected output: undefined

Example 2: javascript remove property from object

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

Example 3: 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 4: javascript remove object key

var obj = {a: 5, b: 3};
delete obj["a"];
console.log(obj); // {b: 3}

Example 5: nodejs delete object key

delete obj.firstname;

Example 6: delete js

let monTableauAssociatif = {
     'prenom' : 'Mark' ,
     'nom'    : 'Zuckerberg' , 
     'poste'  : 'Pdg de Facebook',

 } ;
 delete(monTableauAssociatif.poste)
 console.log(monTableauAssociatif) ;