Javascript Objects And Properties

JavaScript Object Properties. A JavaScript object is basically a collection of unordered properties. Values associated with a JavaScript object are called its properties. Properties can usually be added, updated, and deleted, excluding read-only properties. Let's now look at the few ways for accessing object properties

JavaScript is designed on an 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.

Above, p1 and p2 are the names of objects. Objects can be declared same as variables using var or let keywords. The p1 object is created using the object literal syntax a short form of creating objects with a property named name.The p2 object is created by calling the Object constructor function with the new keyword. The p2.name quotStevequot attach a property name to p2 object with a string

Summary in this tutorial, you will learn about JavaScript objects and how to manipulate object properties effectively. Introduction to the JavaScript objects. In JavaScript, an object is an unordered collection of key-value pairs. Each key-value pair is called a property. The key of a property can be a string.

An object in JavaScript is a collection of key-value pairs, where keys are strings properties and values can be any data type. Objects can be created using object literals, constructors, or classes.

Object Properties. A real life car has properties like weight and color car.name Fiat, car.model 500, car.weight 850kg, car.color white. Car objects have the same properties, but the values differ from car to car.

A property has a key also known as quotnamequot or quotidentifierquot before the colon quotquot and a value to the right of it.. In the user object, there are two properties. The first property has the name quotnamequot and the value quotJohnquot. The second one has the name quotagequot and the value 30. The resulting user object can be imagined as a cabinet with two signed files labeled quotnamequot and quotagequot.

Prototype Properties. JavaScript objects inherit the properties of their prototype. The delete keyword does not delete inherited properties, but if you delete a prototype property, it will affect all objects inherited from the prototype.

In both examples, we're adding a new property key3 to the object obj. Deleting Object Properties. In JavaScript, you can delete properties from an object using the delete operator let obj key1 'value1', key2 'value2', key3 'value3' delete obj. key1 console. log obj. key1 Outputs undefined. We're deleting the property key1

In this example, name, age, and occupation are properties of the person object. Each property has a corresponding value that can be accessed and modified using various techniques. Accessing Object Properties. JavaScript provides several ways to access object properties. Let's explore each method in detail. 1. Dot Notation