js delete object property by key 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: 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;