DEV Community: Shakil Ahmed

Enhancing user experience by uncovering issues and solutions to website design and functionality

Shakil Ahmed — Fri, 08 Dec 2023 13:02:13 +0000

In the ever-evolving digital landscape, a website serves as the virtual storefront for businesses, playing a pivotal role in shaping the first impression and overall user experience. However, several common pitfalls can undermine the effectiveness of a website, negatively impacting user engagement and hindering business success. In this comprehensive exploration, we delve into specific challenges such as poor or dated visual design, slow upload speed, lack of quality images, confusing user journey, low standard of written content, hidden details or no obvious point of contact, security issues, certification problems, and badly integrated elements. Understanding and addressing these issues is crucial for businesses aiming to create a user-friendly online presence and foster positive interactions with their audience.

1. Poor or Dated Visual Design:
The visual appeal of a website is often the first aspect users notice, making it a critical factor in retaining visitor interest. Outdated or poor visual design can create a negative perception of the brand and drive potential customers away. To address this issue, businesses should invest in modern, responsive design that aligns with current trends and user expectations. This includes optimizing color schemes, ensuring a clean layout, and incorporating visually appealing elements that enhance the overall aesthetic.

2. Slow Upload Speed:
In an era where users demand instant access to information, a slow website can be a major deterrent. Slow upload speed not only frustrates visitors but also adversely affects search engine rankings. To overcome this challenge, optimizing images, leveraging browser caching, and investing in reliable hosting services are essential steps. Implementing content delivery networks (CDNs) can distribute website resources across multiple servers globally, significantly improving loading times for users across different geographical locations.

3. Lack of Quality Images:
Visual content plays a crucial role in capturing and maintaining user attention. Websites with poor-quality images or insufficient visual content may fail to convey professionalism and credibility. Businesses should invest in high-resolution, relevant images that align with their brand identity. Additionally, optimizing image sizes without compromising quality can contribute to faster loading times, enhancing both aesthetics and performance.

4. Poor or Confusing User Journey:
A seamless user journey is imperative for keeping visitors engaged and guiding them toward desired actions. A website with a convoluted navigation structure or unclear calls-to-action risks losing potential customers. Conducting user experience (UX) audits and implementing intuitive navigation systems are essential steps. User testing and feedback mechanisms can provide valuable insights into areas where the user journey can be refined for improved clarity and simplicity.

5. Low Standard of Written Content:
Compelling and well-crafted written content is fundamental to conveying the brand message effectively. Poorly written or irrelevant content can undermine the credibility of a website and hinder communication with the target audience. Businesses should invest in professional copywriting services to ensure that the content is not only error-free but also resonates with the intended audience, aligning with the brand's tone and messaging strategy.

6. Hidden Details or No Obvious Point of Contact:
Transparent communication is key to establishing trust with website visitors. Hidden details or a lack of an obvious point of contact can frustrate users seeking information or assistance. Placing contact information prominently, implementing clear calls-to-action, and providing comprehensive details about products or services contribute to a positive user experience. Building trust through transparency fosters stronger relationships with potential customers.

7. Security Issues and Certification Problems:
In an age where online security is a top concern for users, websites must prioritize robust security measures. Security issues, such as inadequate encryption or vulnerability to cyber threats, can result in a loss of user trust and potential data breaches. Implementing Secure Sockets Layer (SSL) certificates, regularly updating security protocols, and adhering to industry standards for data protection are essential practices. Displaying relevant certifications prominently can further assure users of the website's commitment to security.

8. Badly Integrated Elements:
Websites often incorporate various elements, such as plugins, widgets, or third-party integrations, to enhance functionality. However, poorly integrated elements can lead to technical glitches, slow performance, and a disjointed user experience. Regularly updating and testing integrations, ensuring compatibility with the overall design, and resolving any conflicts promptly are crucial for maintaining a seamless and functional website.

Conclusion:
In the competitive online landscape, a website serves as a powerful tool for businesses to connect with their audience and drive success. Addressing issues related to visual design, upload speed, image quality, user journey, written content, contact details, security, certification, and integration is essential for creating a positive and engaging user experience. By prioritizing these aspects and continuously optimizing website functionality, businesses can not only attract and retain visitors but also build trust and credibility in the digital realm. As technology evolves, staying vigilant and responsive to user expectations will be key to maintaining a competitive edge and fostering long-term success in the online sphere.

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Mastering Version Control with Git in MERN Stack Development

Shakil Ahmed — Fri, 08 Dec 2023 12:57:51 +0000

Version control is the backbone of collaborative software development. Git, a distributed version control system, empowers MERN stack developers to manage their codebase efficiently, collaborate seamlessly, and track project history. In this guide, we'll explore best practices for using Git in your MERN stack projects.

1. Setting Up Git:

Install Git on your machine: Git Downloads
Configure your identity using git config for name and email.

2. Initializing a Git Repository:

Navigate to your MERN stack project's root directory and run:

git init

3. Basic Git Commands:

git status: Check the status of your working directory.
git add : Stage changes for commit.
git commit -m "Your commit message": Commit staged changes.

4. Branching:

Create a new branch for features or bug fixes:

git checkout -b feature/new-feature

Switch between branches:

git checkout <branch-name>

5. Merging:

Merge branches into the main branch:

git checkout main
git merge feature/new-feature

6. Conflict Resolution:

Resolve conflicts during merging by editing the conflicting files and then committing the changes.

7. Reverting Changes:

Revert to the previous commit:

git revert HEAD

8. Viewing Commit History:

View a log of commits:

git log

9. Tagging:

Create lightweight tags for milestones:

egit tag v1.0.0

10. Ignoring Files:

Create a .gitignore file to specify files or directories to be ignored.

11. Remote Repositories:

Connect your local repository to a remote repository (e.g., on GitHub or GitLab).
Push changes to the remote repository:

git push origin main

12. Pull Requests:

If collaborating on a platform like GitHub, use pull requests for code review and merging.

13. Git Hooks:

Implement pre-commit or post-merge hooks to automate tasks like linting or testing.

14. Git Workflow Best Practices:

Follow a branching strategy (e.g., Gitflow or GitHub flow) that suits your project.

15. Documentation:

Add a README.md file to your repository providing essential information about your project.

Git provides a powerful set of tools for version control, but its effectiveness relies on proper usage. By mastering Git, you enhance collaboration, maintain a stable codebase, and have the flexibility to experiment with new features. Consistent use of version control is a hallmark of professional software development, and as a MERN stack developer, it's a skill that will serve you well throughout your career.
Happy coding!

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Navigating Career Growth in the Dynamic Tech Landscape: A Guide for Aspiring Professionals

Shakil Ahmed — Mon, 04 Dec 2023 06:55:54 +0000

In the fast-paced world of technology, continuous learning and strategic career planning are essential for success. This article aims to provide insights and resources for individuals seeking to advance their careers in the dynamic tech industry.

Embrace Continuous Learning: Discuss the importance of staying updated with the latest technologies. Highlight online learning platforms (e.g., Coursera, Udacity, edX) for acquiring new skills.
Specialization and Niche Skills: Advice on the benefits of specializing in a particular area. Mention niche skills in demand and how they contribute to career growth.
Certification Programs: Introduce reputable certification programs relevant to the tech industry. Highlight the value of certifications in demonstrating expertise to employers.
Building a Strong Online Presence: Emphasize the importance of a well-crafted LinkedIn profile. Share tips for showcasing skills, accomplishments, and projects effectively.
Networking Strategies: Discuss the significance of networking in the tech community. Provide advice on attending industry events, joining online forums, and participating in tech meetups.
Mentorship Opportunities: Encourage seeking mentorship from experienced professionals. Share platforms or programs that connect mentors and mentees in the tech sector.
Soft Skills Development: Highlight the importance of soft skills (communication, teamwork, leadership). Suggest resources for developing these skills alongside technical expertise.
Industry Trends and Future-proofing: Discuss staying informed about industry trends and emerging technologies. Provide insights into how anticipating future trends can shape career decisions.
Job Searching Strategies: Offer tips for optimizing job searches on platforms like LinkedIn and specialized tech job boards. Discuss the importance of tailoring resumes and cover letters for tech roles.
Balancing Technical and Business Skills: Emphasize the need for a balance between technical proficiency and business acumen. Recommend resources for understanding the business side of technology.

Conclusion: In conclusion, a successful career in the tech industry requires a combination of technical expertise, continuous learning, and strategic networking. By embracing these strategies and utilizing the suggested resources, aspiring tech professionals can navigate the ever-evolving landscape and achieve long-term career growth.

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Unleashing High-Performance: The Power of MERN Stack for Modern Applications

Shakil Ahmed — Mon, 04 Dec 2023 06:37:13 +0000

In the ever-evolving landscape of software development, the MERN stack has emerged as a powerhouse for building high-performance applications. This article dives into the key components—React, Node, Express, and MongoDB—and explores how their synergy delivers robust and scalable solutions.

1. Understanding the MERN Stack:
The MERN stack is a full-stack web development framework that comprises four key technologies, each playing a unique role in the development process.

MongoDB (M):
Introduction: MongoDB is a NoSQL database that stores data in flexible, JSON-like documents.Advantages: Schema flexibility allows for dynamic and evolving data structures.Scalability and performance with support for horizontal scaling across distributed servers. JSON-like documents facilitate seamless integration with JavaScript applications.

Express.js (E):
Introduction: Express.js is a minimalistic and flexible Node.js web application framework.Advantages: Simplifies server-side development with a robust set of features for building web and mobile applications. Middleware support enhances the extensibility and functionality of applications. Streamlines the creation of RESTful APIs, making communication between the front end and back end efficient.

React (R):
Introduction: React is a JavaScript library for building user interfaces, developed and maintained by Facebook.Advantages: Component-based architecture promotes modular and reusable code. Virtual DOM ensures efficient updates and renders only the necessary components, improving performance. Declarative syntax simplifies the creation of complex UIs and enhances code readability.

Node.js (N):
Introduction: Node.js is a JavaScript runtime built on the V8 JavaScript engine.Advantages: Enables server-side JavaScript, allowing developers to use a single language (JavaScript) for both frontend and backend development. Asynchronous, event-driven architecture enhances scalability and handles concurrent connections efficiently. A large and active open-source community contributes to a wealth of libraries and modules.

2. React for Dynamic User Interfaces:

Reusability: React applications are built using components, which are reusable, self-contained building blocks. Each component can be designed to represent a specific part of the user interface, encapsulating its logic and rendering behavior.
Modularity: Components can be organized hierarchically, creating a modular and easy-to-understand structure. This modularity simplifies development, maintenance, and testing.
State Management: React components can have a local state, making it easier to manage and control the data within a specific component. State changes trigger re-rendering, updating the user interface accordingly.
Efficient Rendering: React uses a virtual DOM to optimize the rendering process. Instead of updating the actual DOM directly, React updates a virtual representation of it. This virtual DOM is a lightweight copy of the real DOM, and React can quickly determine the most efficient way to update the actual DOM by comparing the virtual DOM with the previous state.
Minimizing DOM Manipulations: React calculates the minimal number of operations required to update the DOM. This results in improved performance, especially in applications with complex and dynamic user interfaces.
Virtual DOM Diffing: When the state changes, React creates a new virtual DOM representation. It then compares this new virtual DOM with the previous one, identifies the differences (diffing), and updates only the changed parts in the actual DOM.

3. Node.js for Server-Side Power:
Non-Blocking I/O:
Node.js is designed to be non-blocking, allowing it to handle a large number of concurrent connections efficiently. This is achieved through the use of asynchronous I/O operations, enabling the server to continue processing other tasks while waiting for I/O operations to complete.

Event Loop:
Node.js uses an event-driven architecture with an event loop. The event loop allows Node.js to handle multiple events concurrently without the need for threads. When an asynchronous operation completes, a callback is executed, allowing developers to respond to events and handle them appropriately.

Scalability:
The asynchronous and non-blocking nature of Node.js makes it highly scalable. It can handle a large number of simultaneous connections without the need for spawning new threads or processes for each connection. This makes it suitable for building real-time applications, such as chat applications or online gaming platforms.

4. Express.js for Efficient Server-Side Routing:
Minimalistic Structure:
Express.js has a minimalistic and unopinionated structure, allowing developers the flexibility to organize their code as they see fit. This simplicity reduces the learning curve and enables rapid development.

Routing:
Express.js simplifies server-side routing by providing an easy-to-use routing system. Routes define how the application responds to client requests, and developers can define routes based on HTTP methods and URL patterns.

Middleware:
Middleware functions in Express allow developers to execute code during the request-response cycle. This can be used for tasks such as logging, authentication, parsing request bodies, and more. Middleware enhances the extensibility of Express applications.

Error Handling:
Express simplifies error handling with middleware. Developers can create error-handling middleware to handle errors gracefully and maintain a clean separation of concerns.

5. MongoDB for Flexible Database Solutions:
Dynamic Schema:
With MongoDB, there is no need to define a rigid schema upfront. This dynamic schema allows developers to insert documents without conforming to a predefined structure. This is particularly beneficial in scenarios where the data model is subject to frequent changes.

Scalability:
MongoDB is designed to scale horizontally, making it well-suited for handling large amounts of data and high-traffic applications. By distributing data across multiple servers or clusters, MongoDB can seamlessly handle increased loads by adding more hardware resources.

Agile Development:
MongoDB's flexible data model aligns well with agile development practices. Developers can quickly iterate on their applications without being constrained by a fixed schema. This agility is essential for fast-paced development and adapting to changing business requirements.

Nested Documents and Arrays:
The ability to store nested documents and arrays within a single document allows developers to model complex relationships more naturally. This reduces the need for complex joins and promotes efficient data retrieval.

Ad Hoc Queries:
MongoDB supports ad hoc queries, enabling developers to perform dynamic and powerful queries on their data. This is in contrast to traditional relational databases where the schema must be modified to accommodate new query requirements

6. Scalability and Performance Optimization:
Use Indexing in MongoDB:
Ensure that your MongoDB queries are optimized by using indexes on fields frequently used in queries. This can significantly speed up read operations.

Caching:
Implement caching mechanisms for frequently accessed data to reduce the load on the database. Tools like Redis can be used for caching.

Optimized Middleware:
Be selective with middleware usage and choose lightweight middleware when possible. Some middleware can introduce overhead, impacting response times.

Load Balancing:
Use load balancing to distribute incoming traffic across multiple servers. Tools like Nginx or HAProxy can be configured for load balancing in front of Node.js servers.

Horizontal Scaling:
Leverage horizontal scaling by adding more servers to your application infrastructure. Services like Kubernetes or Docker Swarm can help manage containerized applications across multiple nodes.

Connection Pooling:
Implement connection pooling for MongoDB to efficiently manage database connections and reduce the overhead of creating and closing connections.

Code Splitting:
Utilize code splitting to break down your React application into smaller chunks. This helps in loading only the necessary code for the current view, improving initial load times.

Virtual DOM Optimization:
Optimize the rendering process by minimizing unnecessary renders and updates. Techniques like PureComponent and React. memo can help in preventing unnecessary re-renders.

Lazy Loading:
Lazy load components and assets that are not immediately required, improving the initial page load performance. React provides a React.lazy() function for component-level code splitting.

State Management:
Choose an efficient state management solution like Redux for handling the state in large-scale applications. Proper state management prevents unnecessary re-renders and facilitates the flow of data in complex components.

Server-Side Rendering (SSR):
Consider implementing server-side rendering to move some rendering logic to the server. SSR can improve initial page load times and provide better SEO.

Profiling and Debugging:
Use built-in development tools and profilers to identify performance bottlenecks. Node.js provides the built-in --inspect flag for debugging and tools like Chrome DevTools can help in profiling React applications.

Load Testing:
Conduct load testing using tools like Apache JMeter or artillery to simulate heavy traffic and identify performance issues under stress.

Performance Monitoring:
Implement performance monitoring tools like New Relic, Datadog, or AppDynamics to gain insights into application performance in real-time. These tools can help you identify and troubleshoot performance issues.

Logging and Error Tracking:
Set up logging and error tracking using tools like Sentry or Loggly to identify and address issues quickly. Monitoring logs helps in understanding user behavior and identifying potential areas for optimization.

Database Monitoring:
Monitor MongoDB performance using tools like MongoDB Atlas, which provides insights into query performance, indexes, and overall database health.

CDN (Content Delivery Network):
Use CDNs to distribute static assets globally, reducing latency and improving the overall loading speed of your application.

7. Challenges and Solutions:
Use State Management Libraries:
Employ state management libraries like Redux or Recoil for centralized state management. These libraries provide a predictable state container and help maintain a single source of truth for the application state.

Context API:
For smaller applications, or when a simpler solution is sufficient, utilize React's Context API to manage the state at a global level without the need for third-party libraries.

Input Validation:
Implement thorough input validation to prevent issues like SQL injection and cross-site scripting (XSS). Libraries express-validator can help validate user inputs.

Helmet Middleware:
Use the helmet middleware in Express to set HTTP headers, adding an extra layer of security against common web vulnerabilities.

Query Optimization:
Optimize MongoDB queries by using appropriate indexes, ensuring efficient data retrieval.

Middleware Caching:
Implement caching mechanisms in Express.js middleware to store frequently accessed data and reduce database load.

Server-Side Rendering (SSR):
Consider server-side rendering to improve initial page load performance and enhance SEO.

Horizontal Scaling:
Employ horizontal scaling by distributing the application across multiple servers or containers. Tools like Docker, Kubernetes, or container orchestration systems can assist in managing scalability.

Load Balancing:
Implement load balancing to distribute incoming traffic evenly across multiple servers using tools like Nginx or HAProxy.

Database Sharding:
For MongoDB, consider sharding to horizontally partition data across multiple servers, improving read and write scalability.

WebSockets:
Use WebSockets for real-time communication between the client and server. Libraries like Socket.io simplify WebSocket implementation.

GraphQL Subscriptions:
If using GraphQL, leverage subscriptions to facilitate real-time updates over a single connection.

Conclusion: In conclusion, the MERN stack stands as a formidable choice for developers aiming to build high-performance applications. Its versatility, scalability, and ability to handle both front and back with a single language make it a compelling option for modern development projects.

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Top JavaScript Tricks and Tips

Shakil Ahmed — Tue, 10 Aug 2021 05:00:31 +0000

Swap elements of an array

Lots of array operations require the swapping of elements, for example, sorting. You would need to write a small utility function and The typical algorithm requires a temp variable for swapping. But ever since, I have learned this trick. It’s awe-inspiring. During a couple of coding interviews, I used this trick to impress the interviewer, and it has worked well. Some of them go, What is that syntax?

We will use destructing to achieve that. Destructing was introduced in the ES6 version of JavaScript.

You must be wondering how does it work without using a temp variable? Destructuring holds value for you, so you don’t need that additional temp value. You can also use destructuring to swap two variables.

While we are on the subject of swapping variables, let me show you another neat trick. I was once asked this question during an interview. The interviewer asked me to swap number variable values without using temp variables or destructuring. I ended up using math to achieve a three-step process, but recently I simplified it into a single-line solution. Though this is a neat trick, please don’t use this in your project as it may confuse the reader. You can, however, use it as an interview question if you want this to be a painful experience for them :).

Destructing Alias

You have an object from which you want to create a variable from one of the properties. You can easily do it. But often, you want to use a variable name that is different than the property name. For example, if you had a property called “age,” the variable name you want to create is “profileAge.” you would need to create an alias. You can easily do it in multiple lines, but this is a neat solution in a single code line.

Shuffling

Many algorithms require shuffling elements of an array. During a coding interview, you may get a question to build a game. And most games involves some shuffling algorithm. Once I interviewed at Uber, they asked me to make a minesweeper game, whereas as a first step, I had to build a layout with randomly placed mines. If you need to develop a shuffling algorithm, it requires a bit of thinking; recently, I stumbled upon this little trick that makes a shuffling piece of cake.

To understand the above code, you need to know how the sort method works on arrays. Sort takes a callback function; usually, based on the arguments of the arrays, we can decide where we want to place the next element. This function can return positive, negative, or 0 values. We can randomly create these values using a random number generator, which is always positive, so subtracting 0.5 would give us about a 50% chance of returning a positive or negative value.

Type conversion

There are many different ways to convert one type to another in JavaScript. Some look cleaner than the others, so make sure you don’t compromise the readability of the code by using a particular way.

to String
to Number
Float to Integer
to Boolean

Positive Integer to binary or hexadecimal or octal

Remove duplicates from an array

This one-line solution for removing duplicate values from the Array is neat. JavaScript introduced a new data type called Set in the ES6 version. Sets, by default, don’t allow duplicated values. So this simple trick involves converting an Array to a Set, which removes the duplicate values and then converting the Set back to an Array.

Handle JavaScript Events

Shakil Ahmed — Tue, 10 Aug 2021 04:54:43 +0000

Events

Before diving deep, let’s clear out the basics first. Everyone loves to click that button see that magic happen but deep down inside JavaScript that click is an event and similar to that when the user interacts with the page, their actions are captured as events.
In order to have a button listen to an event, you need to register a listener or handler (whatever term suits you the best). Let’s say we have a button click and we want to register an event on the button to measure how many times the button gets clicked. Here’s how we’ll do it.

In this example what we did is we took the button element with id using querySelector and attached an event to it using addEventListener

Event Propagation

Now that we know what event is and how to attach eventListener to an element. Let just see how it works and how many events get triggered when a button is clicked (might surprise a lot of you).

What do you think? On how many elements a click event gets triggered if I click on that button above?
Without a doubt, it’s going to be the button itself but it’s also going to be all the button’s ancestors and even the document and window objects.

Why is that? Let's just find out.
An event basically propagates in 3 phases:
Capture Phase: The event starts from the window, document and deep dives through all the ancestors of the target element.
Target Phase: The event finds its target element and gets triggered on which the user has interacted.
Bubble Phase: The event goes up the hierarchy in a similar fashion it dived during the capture phase until it reaches the document and window.

Event Bubbling

Event bubbling is the propagation of an event from its origin towards the root element. Which means if an event has occurred on a button then it will also be triggered by its parent and its parent’s parent and so on up until the HTML element.
Now let’s see event bubbling in action.

Now if you have interacted with an above pen, a few things you would have realized by looking at the console is.
When you click on the white part, nothing happens.
When clicked on the green, GrandParent event is triggered.
When clicked on the yellow, parent as well as GrandParentevent is triggered.

When clicked on blue, all three parents, GrandParent and child event is triggered.
Now you must have realized by now that all of the events whether it happens on some sideline button or on the button you want everyone to see, each will trigger an event on the element that is wrapping them up.

Event Delegation

The modern application relies heavily on events to provide interactive interfaces to the users. It’s really common to have a vast number of event handlers on the web page, and it is during these times event delegation can really shine and can create a difference.
You’ll be surprised by how many events can there be some simple looking sites.

A good example of event delegation would be building a colour palette and attaching an event listener to every colour as we want to do some operations on it. So one way to do it will be attaching an event listener to every colour element so when the user will click on it, the operations get done. Just as shown below.

While the approach we’ve adopted is viable, it’s not as optimized as it could be. Our palette has 150 colours and, as a result, we are attaching 150 listeners to handle all of them. Besides, if our component had a feature that allowed the user to add custom colours, we would need to add our listener to each new colour added to the palette.

But a better way would be as you might think is utilizing what we have learned earlier on and applying it here. To solve the problem mentioned in the above section, we will put together everything we have learned so far to make use of a technique called event delegation.

As every event gets bubbled up maybe we don’t need to attach every colour element to the event what we can do instead is attach that event on parent element so whenever a colour element gets clicked it bubbles up to parent element which then fires the function we wanted.

Conclusion

Knowing a simple event delegation concept in our example reduced from having 150 events attached to just one and these small things matter when application gets complex and makes a real difference in performance.

Now that you know this concept, you’ll be able to build apps that are complex, interactive and at the same time doesn’t compromise on performance.

Powerful JavaScript Shorthands That You Should Know

Shakil Ahmed — Tue, 10 Aug 2021 04:46:26 +0000

JavaScript has a lot of powerful features and tools that make the life of the developer much easier. The syntax contains a lot of shorthands that you can use to write JavaScript code much faster and reduce lines. Especially in the latest ECMAScript specifications.

Convert string to a number

Normally, to convert a string to a number, we use the method parseInt() . However, there is a shorthand that allows us to do that.
By using the unary operator + , we can easily convert a string into a number.
Here is an example:


let speed = "60";
console.log(typeof speed); //string
console.log(typeof +speed); //number
console.log(+speed); //60, not "60".

As you can see, only by adding + at the beginning of the variable speed , we were able to convert the speed to a number.
There is also another shorthand to convert from a number into a string. It’s by simply adding an empty string to the number.
Here is an example:


let speed = 100;
speed += ""; //returns "100" , not 100.
console.log(typeof speed); //string

Using the ternary operator

Another shorthand is the ternary operator, it allows us to easily write conditional statements in a short way using the keywords ? and :
Here is an example using IF else statements:
Longhand:


let speed = 80;
if(speed < 30){
 console.log('slow');
}else if(speed > 60){
 console.log('fast');
}else{
 console.log('between 30 and 60');
}
//output: fast

Here is the same example, but now using the ternary operator instead:
Shorthand:


let speed = 80;
console.log(speed < 30 ? 'slow': speed > 60 ? 'fast'
: 'between 30 & 60');
//output: fast

As you can see, by using the ternary operator shorthand, we were able to easily reduce the amount of code we had to write. It only took us 2 lines of code to write the conditional statements.

Short-circuit evaluation

Have a look at the below example using an IF statement.
Longhand:


let isOnline = true;
if(isOnline){
 console.log("Online");
}
//returns "online"

We can write the same statement using the short circuit && . Here is the example:
Shorthand:


let isOnline = true;
isOnline && console.log("Online");
//returns "online"

The short circuit evaluation && is one of the shorthands that allow you to write short conditionals. It’s used between two values, if the first value is truthy, it returns the second value. Otherwise, it returns the first value

Flattening an array

The best shorthand to flatten a multidimensional array is by using the method flat() . I have seen, a lot of developers use the method filter, concat, and all other long ways to flatten an array. Maybe because they don’t know about the flat method yet.

So this amazing method allows you to flatten an array in one single line of code. It accepts one optional argument(number), which is the level of flattening(how deep you want to flatten an array).

Here is an example:


let numbers = [9, [102, 5], [6, 3], 2];
numbers.flat(); //returns [9, 102, 5, 6, 3, 2]

Merging and cloning arrays

When it comes to merging and cloning arrays in JavaScript, the spread operator {…} is the best shorthand you can use.
Merging arrays:


const employees = ["Chris", "John"];
const entrepreneurs = ["James", "Anna"];
//merging both arrays to a new array.
const all = [...employees, ...entrepreneurs];
console.log(all); //output: ["Chris", "John", "James", "Anna"]

Cloning an array:


const numbers = [4, 8, 9, 0];
//cloning the numbers array.
const clone = [...numbers];
console.log(clone); //output: [4, 8, 9, 0]

For loop shorthand

Mostly when we want to loop through an array using a for loop, we do it like this:
Longhand:


const users = ["John", "Chris", "Mehdi", "James"];
for(let i = 0; i < users.length; i++){
   console.log(users[i]);
}

/*output:
   John
   Chris
   Mehdi
   James
*/

But we can achieve the same thing using the loop for of shorthand:
Shorthand:


const users = ["John", "Chris", "Mehdi", "James"];

for (let user of users){
  console.log(user);
}
/*output:
   John
   Chris
   Mehdi
   James*/

Arrow functions

Arrow functions are a shorthand that allows you to easily write functions in a short way and reduce your code.
Here are the examples:
Normal function:


function addNums(x, y){
 return x + y;
}
addNums(6, 5); //11


Arrow function:
const addNums = (x, y)=> x + y;
addNums(6, 5); //11

Conclusion
As you can see, these are some of the popular shorthands that you can use in JavaScript. They allow you to reduce code syntax and keep your code short as much as you can.
Thank you for reading this article. I hope you found it useful.