Javascript Node Js basic to Advance

// 18. Object.fromEntries()

let entries = [['a', 1], ['b', 2], ['c', 3]];
let newObject = Object.fromEntries(entries);
console.log(newObject);

// 17. Object.entries()

let sampleObject = { a: 'Apple', b: 'Ball', c: 'Cat' };
let entries = Object.entries(sampleObject);
console.log(entries);

// 16. Object.is()

let value1 = 5;
let value2 = 5;
console.log(Object.is(value1, value2));

// 15. Object.setPrototypeOf()

let sampleObject = {};
let prototypeObject = { prototypeProp: 'prototype' };
Object.setPrototypeOf(sampleObject, prototypeObject);
console.log(sampleObject.prototypeProp);

// 14. Object.getOwnPropertyDescriptors()

let sampleObject = { name: 'John', age: 30 };
let descriptors = Object.getOwnPropertyDescriptors(sampleObject);
console.log(descriptors);

// 13. Object.defineProperties()

let sampleObject = {};
Object.defineProperties(sampleObject, {
  property1: {
    value: 42,
    writable: true
  },
  property2: {
    value: 'Hello',
    writable: false
  }
});
console.log(sampleObject.property1);
console.log(sampleObject.property2);

// 12. Object.defineProperty()

let sampleObject = {};
Object.defineProperty(sampleObject, 'property1', {
  value: 42,
  writable: false
});
console.log(sampleObject.property1);

// 11. Object.create()

let sampleObject = { name: 'John', age: 30 };
let newObject = Object.create(sampleObject);
console.log(newObject);

// 10. Object.hasOwnProperty()

let sampleObject = { name: 'John', age: 30 };
console.log(sampleObject.hasOwnProperty('age'));

// 9. Object.getPrototypeOf()

let sampleObject = {};
console.log(Object.getPrototypeOf(sampleObject));

// 8. Object.getOwnPropertyNames()

let sampleObject = { name: 'John', age: 30 };
console.log(Object.getOwnPropertyNames(sampleObject));

// 7. Object.getOwnPropertyDescriptor()

let sampleObject = { name: 'John', age: 30 };
let descriptor = Object.getOwnPropertyDescriptor(sampleObject, 'age');
console.log(descriptor);

// 6. Object.seal()

let sampleObject = { name: 'John', age: 30 };
Object.seal(sampleObject);
// Attempting to add/delete properties in a sealed object's descriptor will not work

// 5. Object.freeze()

let sampleObject = { name: 'John', age: 30 };
Object.freeze(sampleObject);
// Attempting to modify a frozen object will not work

// 4. Object.assign()

let obj1 = { a: 1, b: 2 };
let obj2 = { b: 4, c: 5 };
let mergedObject = Object.assign({}, obj1, obj2);
console.log(mergedObject);

// 3. Object.entries()

let sampleObject = { name: 'John', age: 30, city: 'New York' };
console.log(Object.entries(sampleObject));

// 2. Object.values()

let sampleObject = { name: 'John', age: 30, city: 'New York' };
console.log(Object.values(sampleObject));

// 1. Object.keys()

let sampleObject = { name: 'John', age: 30, city: 'New York' };
console.log(Object.keys(sampleObject));

Javascript object methods 👇

String functions in js 👆