Shubham Ankit

Shubham Ankit

1643475793

JavaScript Tutorial for Beginners | JavaScript Getter and Setter

In this tutorial, you will learn about JavaScript getter and setter methods with the help of examples.

In JavaScript, there are two kinds of object properties:

  • Data properties
  • Accessor properties

Data Property

Here's an example of data property that we have been using in the previous tutorials.

const student = {

    // data property
    firstName: 'Monica';
};

Accessor Property

In JavaScript, accessor properties are methods that get or set the value of an object. For that, we use these two keywords:

  • get - to define a getter method to get the property value
  • set - to define a setter method to set the property value

JavaScript Getter

In JavaScript, getter methods are used to access the properties of an object. For example,

const student = {

    // data property
    firstName: 'Monica',
    
    // accessor property(getter)
    get getName() {
        return this.firstName;
    }
};

// accessing data property
console.log(student.firstName); // Monica

// accessing getter methods
console.log(student.getName); // Monica

// trying to access as a method
console.log(student.getName()); // error

In the above program, a getter method getName() is created to access the property of an object.

get getName() {
    return this.firstName;
}

Note: To create a getter method, the get keyword is used.

And also when accessing the value, we access the value as a property.

student.getName;

When you try to access the value as a method, an error occurs.

console.log(student.getName()); // error

JavaScript Setter

In JavaScript, setter methods are used to change the values of an object. For example,

const student = {
    firstName: 'Monica',
    
    //accessor property(setter)
    set changeName(newName) {
        this.firstName = newName;
    }
};

console.log(student.firstName); // Monica

// change(set) object property using a setter
student.changeName = 'Sarah';

console.log(student.firstName); // Sarah

In the above example, the setter method is used to change the value of an object.

set changeName(newName) {
    this.firstName = newName;
}

Note: To create a setter method, the set keyword is used.

As shown in the above program, the value of firstName is Monica.

Then the value is changed to Sarah.

student.chageName = 'Sarah';

Note: Setter must have exactly one formal parameter.

JavaScript Object.defineProperty()

In JavaScript, you can also use Object.defineProperty() method to add getters and setters. For example,

const student = {
    firstName: 'Monica'
}

// getting property
Object.defineProperty(student, "getName", {
    get : function () {
        return this.firstName;
    }
});

// setting property
Object.defineProperty(student, "changeName", {
    set : function (value) {
        this.firstName = value;
    }
});

console.log(student.firstName); // Monica

// changing the property value
student.changeName = 'Sarah';

console.log(student.firstName); // Sarah

In the above example, Object.defineProperty() is used to access and change the property of an object.

The syntax for using Object.defineProperty() is:

Object.defineProperty(obj, prop, descriptor)

The Object.defineProperty() method takes three arguments.

  • The first argument is the objectName.
  • The second argument is the name of the property.
  • The third argument is an object that describes the property.

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JavaScript Tutorial for Beginners | JavaScript Getter and Setter
Lowa Alice

Lowa Alice

1624420620

JavaScript Getters and Setters. IN JUST 6 MINUTES

JavaScript Getters and Setters

đŸ“ș The video in this post was made by Programming with Mosh
The origin of the article: https://www.youtube.com/watch?v=bl98dm7vJt0&list=PLTjRvDozrdlxEIuOBZkMAK5uiqp8rHUax&index=11
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Lowa Alice

Lowa Alice

1624379820

JavaScript Tutorial for Beginners: Learn JavaScript in 1 Hour

Watch this JavaScript tutorial for beginners to learn JavaScript basics in one hour.
avaScript is one of the most popular programming languages in 2019. A lot of people are learning JavaScript to become front-end and/or back-end developers.

I’ve designed this JavaScript tutorial for beginners to learn JavaScript from scratch. We’ll start off by answering the frequently asked questions by beginners about JavaScript and shortly after we’ll set up our development environment and start coding.

Whether you’re a beginner and want to learn to code, or you know any programming language and just want to learn JavaScript for web development, this tutorial helps you learn JavaScript fast.

You don’t need any prior experience with JavaScript or any other programming languages. Just watch this JavaScript tutorial to the end and you’ll be writing JavaScript code in no time.

If you want to become a front-end developer, you have to learn JavaScript. It is the programming language that every front-end developer must know.

You can also use JavaScript on the back-end using Node. Node is a run-time environment for executing JavaScript code outside of a browser. With Node and Express (a popular JavaScript framework), you can build back-end of web and mobile applications.

If you’re looking for a crash course that helps you get started with JavaScript quickly, this course is for you.

⭐TABLE OF CONTENT ⭐

00:00 What is JavaScript
04:41 Setting Up the Development Environment
07:52 JavaScript in Browsers
11:41 Separation of Concerns
13:47 JavaScript in Node
16:11 Variables
21:49 Constants
23:35 Primitive Types
26:47 Dynamic Typing
30:06 Objects
35:22 Arrays
39:41 Functions
44:22 Types of Functions

đŸ“ș The video in this post was made by Programming with Mosh
The origin of the article: https://www.youtube.com/watch?v=W6NZfCO5SIk&list=PLTjRvDozrdlxEIuOBZkMAK5uiqp8rHUax&index=2
đŸ”„ If you’re a beginner. I believe the article below will be useful to you ☞ What You Should Know Before Investing in Cryptocurrency - For Beginner
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Thanks for visiting and watching! Please don’t forget to leave a like, comment and share!

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wp codevo

wp codevo

1608042336

JavaScript Shopping Cart - Javascript Project for Beginners

https://youtu.be/5B5Hn9VvrVs

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Jeromy Lowe

Jeromy Lowe

1599097440

Data Visualization in R with ggplot2: A Beginner Tutorial

A famous general is thought to have said, “A good sketch is better than a long speech.” That advice may have come from the battlefield, but it’s applicable in lots of other areas — including data science. “Sketching” out our data by visualizing it using ggplot2 in R is more impactful than simply describing the trends we find.

This is why we visualize data. We visualize data because it’s easier to learn from something that we can see rather than read. And thankfully for data analysts and data scientists who use R, there’s a tidyverse package called ggplot2 that makes data visualization a snap!

In this blog post, we’ll learn how to take some data and produce a visualization using R. To work through it, it’s best if you already have an understanding of R programming syntax, but you don’t need to be an expert or have any prior experience working with ggplot2

#data science tutorials #beginner #ggplot2 #r #r tutorial #r tutorials #rstats #tutorial #tutorials

Sival Alethea

Sival Alethea

1624298400

Learn JavaScript - Full Course for Beginners. DO NOT MISS!!!

This complete 134-part JavaScript tutorial for beginners will teach you everything you need to know to get started with the JavaScript programming language.
⭐Course Contents⭐
0:00:00 Introduction
0:01:24 Running JavaScript
0:04:23 Comment Your Code
0:05:56 Declare Variables
0:06:15 Storing Values with the Assignment Operator
0:11:31 Initializing Variables with the Assignment Operator
0:11:58 Uninitialized Variables
0:12:40 Case Sensitivity in Variables
0:14:05 Add Two Numbers
0:14:34 Subtract One Number from Another
0:14:52 Multiply Two Numbers
0:15:12 Dividing Numbers
0:15:30 Increment
0:15:58 Decrement
0:16:22 Decimal Numbers
0:16:48 Multiply Two Decimals
0:17:18 Divide Decimals
0:17:33 Finding a Remainder
0:18:22 Augmented Addition
0:19:22 Augmented Subtraction
0:20:18 Augmented Multiplication
0:20:51 Augmented Division
0:21:19 Declare String Variables
0:22:01 Escaping Literal Quotes
0:23:44 Quoting Strings with Single Quotes
0:25:18 Escape Sequences
0:26:46 Plus Operator
0:27:49 Plus Equals Operator
0:29:01 Constructing Strings with Variables
0:30:14 Appending Variables to Strings
0:31:11 Length of a String
0:32:01 Bracket Notation
0:33:27 Understand String Immutability
0:34:23 Find the Nth Character
0:34:51 Find the Last Character
0:35:48 Find the Nth-to-Last Character
0:36:28 Word Blanks
0:40:44 Arrays
0:41:43 Nest Arrays
0:42:33 Access Array Data
0:43:34 Modify Array Data
0:44:48 Access Multi-Dimensional Arrays
0:46:30 push()
0:47:29 pop()
0:48:33 shift()
0:49:23 unshift()
0:50:36 Shopping List
0:51:41 Write Reusable with Functions
0:53:41 Arguments
0:55:43 Global Scope
0:59:31 Local Scope
1:00:46 Global vs Local Scope in Functions
1:02:40 Return a Value from a Function
1:03:55 Undefined Value returned
1:04:52 Assignment with a Returned Value
1:05:52 Stand in Line
1:08:41 Boolean Values
1:09:24 If Statements
1:11:51 Equality Operator
1:13:18 Strict Equality Operator
1:14:43 Comparing different values
1:15:38 Inequality Operator
1:16:20 Strict Inequality Operator
1:17:05 Greater Than Operator
1:17:39 Greater Than Or Equal To Operator
1:18:09 Less Than Operator
1:18:44 Less Than Or Equal To Operator
1:19:17 And Operator
1:20:41 Or Operator
1:21:37 Else Statements
1:22:27 Else If Statements
1:23:30 Logical Order in If Else Statements
1:24:45 Chaining If Else Statements
1:27:45 Golf Code
1:32:15 Switch Statements
1:35:46 Default Option in Switch Statements
1:37:23 Identical Options in Switch Statements
1:39:20 Replacing If Else Chains with Switch
1:41:11 Returning Boolean Values from Functions
1:42:20 Return Early Pattern for Functions
1:43:38 Counting Cards
1:49:11 Build Objects
1:50:46 Dot Notation
1:51:33 Bracket Notation
1:52:47 Variables
1:53:34 Updating Object Properties
1:54:30 Add New Properties to Object
1:55:19 Delete Properties from Object
1:55:54 Objects for Lookups
1:57:43 Testing Objects for Properties
1:59:15 Manipulating Complex Objects
2:01:00 Nested Objects
2:01:53 Nested Arrays
2:03:06 Record Collection
2:10:15 While Loops
2:11:35 For Loops
2:13:56 Odd Numbers With a For Loop
2:15:28 Count Backwards With a For Loop
2:17:08 Iterate Through an Array with a For Loop
2:19:43 Nesting For Loops
2:22:45 Do
While Loops
2:24:12 Profile Lookup
2:28:18 Random Fractions
2:28:54 Random Whole Numbers
2:30:21 Random Whole Numbers within a Range
2:31:46 parseInt Function
2:32:36 parseInt Function with a Radix
2:33:29 Ternary Operator
2:34:57 Multiple Ternary Operators
2:36:57 var vs let
2:39:02 var vs let scopes
2:41:32 const Keyword
2:43:40 Mutate an Array Declared with const
2:44:52 Prevent Object Mutation
2:47:17 Arrow Functions
2:28:24 Arrow Functions with Parameters
2:49:27 Higher Order Arrow Functions
2:53:04 Default Parameters
2:54:00 Rest Operator
2:55:31 Spread Operator
2:57:18 Destructuring Assignment: Objects
3:00:18 Destructuring Assignment: Nested Objects
3:01:55 Destructuring Assignment: Arrays
3:03:40 Destructuring Assignment with Rest Operator to Reassign Array
3:05:05 Destructuring Assignment to Pass an Object
3:06:39 Template Literals
3:10:43 Simple Fields
3:12:24 Declarative Functions
3:12:56 class Syntax
3:15:11 getters and setters
3:20:25 import vs require
3:22:33 export
3:23:40 * to Import
3:24:50 export default
3:25:26 Import a Default Export
đŸ“ș The video in this post was made by freeCodeCamp.org
The origin of the article: https://www.youtube.com/watch?v=PkZNo7MFNFg&list=PLWKjhJtqVAblfum5WiQblKPwIbqYXkDoC&index=4

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⭐ ⭐ ⭐The project is of interest to the community. Join to Get free ‘GEEK coin’ (GEEKCASH coin)!
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Thanks for visiting and watching! Please don’t forget to leave a like, comment and share!

#javascript #learn javascript #learn javascript for beginners #learn javascript - full course for beginners #javascript programming language