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This question already has answers here:

The easiest way of achieving this is using Object's assign:

Object.assign(obj1, obj2);

where the first object (obj1) is the target and will get modified.

JavaScript Object Properties, Properties of JavaScript objects can also be accessed or set using a bracket notation (for more details see property accessors). Objects are JavaScript Properties. Properties are the values associated with a JavaScript object. A JavaScript object is a collection of unordered properties. Properties can usually be changed, added, and deleted, but some are read only.

According to Object Spread , you could do it this way :

let mergedObjects = {...obj1, ...obj2};

Working with objects, var o = {}; // Creates a new object // Example of an object property added with You can add as many more properties as you like simply by using the dot JavaScript is designed on a simple object-based paradigm. An object is a collection of properties, and a property is an association between a name (or key) and a value. A property's value can be a function, in which case the property is known as a method. In addition to objects that are predefined in the browser, you can define your own objects.

You can use Object.assign():

let obj1 = {
  key1: 'value1',
  key2: 'value2'
}

let obj2 = {
  key3: 'value3',
  key4: 'value4'
}


console.log(Object.assign(obj1, obj2))

Is it possible to add dynamically named properties to JavaScript , Properties on the Javascript object help set values that can be used within what this does is, it creates a new property on the object obj which Properties on the Javascript object help set values that can be used within the object to manage and use the data. A background on what I mean by properties in javascript. In javascript properties can be created by defining variables on a literal object. For example.

Dynamically creating properties on objects using javascript (Example), This video covers 2 fundamental approaches of adding new property to a JavaScript Object. The first one is without modifying the existing object and second To add a new property to an object, specify the object name followed by: a dot, the name of the new property, an equals sign, and the value for the new property (enclosed in quotes if it is a string). Modify a Property of an Object Literal. The process for modifying a property is essentially the same.

How to add a new property to JavaScript object?, A JavaScript object has properties associated with it. For example, let's create an object named myCar and give it properties var myCar = new Object(); myCar.make = "Ford"; myCar.model JavaScript methods are actions that can be performed on objects. A JavaScript method is a property containing a function definition. function () {return this.firstName + " " + this.lastName;} Methods are functions stored as object properties. Accessing Object Methods. You access an object method with the following syntax: objectName.methodName ()

Working with objects in JavaScript · WebPlatform Docs, Our new object is gimli , which has three properties. Each property consists of a name:value pair, also known as key:value pair. weapon is one JavaScript is often described as a prototype-based language — to provide inheritance, objects can have a prototype object, which acts as a template object that it inherits methods and properties from. An object's prototype object may also have a prototype object, which it inherits methods and properties from,