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JavaScript Object Methods

General Methods

// Copies properties from a source object to a target object
Object.assign(target, source)

// Creates an object from an existing object
Object.create(object)

// Returns an array of the key/value pairs of an object
Object.entries(object)

// Creates an object from a list of keys/values
Object.fromEntries()

// Returns an array of the keys of an object
Object.keys(object)

// Returns an array of the property values of an object
Object.values(object)

// Groups object elements according to a function
Object.groupBy(object, callback)

JavaScript Object.assign()

The Object.assign() method copies properties from one or more source objects to a target object. Continue reading JavaScript Object Methods

JavaScript Object Methods

JavaScript Object Methods

Object methods are actions that can be performed on objects.

A method is a function definition stored as a property value.

Property Value
firstName John
lastName Doe
age 50
eyeColor blue
fullName function() {return this.firstName + ” ” + this.lastName;}

Example

const person = {
  firstName: "John",
  lastName: "Doe",
  id: 5566,
  fullName: function() {
    return this.firstName + " " + this.lastName;
  }
};

In the example above, this refers to the person object :

this.firstName means the firstName property of person. Continue reading JavaScript Object Methods