Coding Like a Pro: 10 JavaScript Tricks Every Developer Should Know

If you’re a web developer, you would know that JavaScript Framework is at the heart of web development. It allows us to build dynamic websites and add interactive elements like charts, graphs, carousels, dropdown menus, and buttons. As JavaScript is continuously evolving and the use of JavaScript frameworks, such as React and Ext JS JavaScript framework, is increasing, developers are discovering new JavaScript tricks to enhance code readability and maintainability. This helps them create faster and more responsive applications.

This article will explore ten great JavaScript tricks and techniques to help you code more efficiently, enhance your coding skills, and create better apps. Let’s get started!

Destructuring Magic

Destructuring is a powerful JavaScript technique that allows you to extract elements from arrays or properties from objects and assign them to distinct variables in a simplified way. It basically allows developers to write cleaner, readable, and concise code, improving code maintainability.

The example code below demonstrates how array destructuring helps simplify the code:

const numbers = [3, 2, 6];
const [a, b, c] = numbers;
console.log(a); // 3
console.log(b); // 2
console.log(c); // 6

If an element from an array is undefined, JavaScript also allows you to define default values during destructuring. This helps ensure your code doesn’t break.

Spread and Rest Operators

Spread and Rest operators in JavaScript use the same syntax or symbol, that is, three dots or (…). However, they are used for different purposes.

You can use a spread operator to expand or spread individual elements of arrays or properties of objects. Hence, a spread operator is useful when you want to combine elements of multiple arrays or properties or multiple objects.

const arrA = [7, 3, 5];
const arrB = [4, 8, 8];
const newArray = […arrA, …arrB];
//Output: [7, 3, 5, 4, 8, 8]

On the other hand, the rest operator in JavaScript is primarily used in destructuring and function parameters. For instance, a rest operator can be used in a function to handle an undefined number of arguments. The function will neatly capture all the arguments in a separate array, making them easier to handle.

function add(…numbers) {
return numbers.reduce((acc, add) => acc + add, 0);
const result = add(1, 2, 3, 4, 5);
// Output: 15

Arrow Functions and Implicit Returns

An arrow function is a concise alternative to the traditional function syntax in JavaScript. They were introduced in ES6 and are helpful for single expression and short functions. Below is the basic syntax of an arrow function:

// Regular function
function addition(c, d) {
return c + d;
// Arrow function
const addition = (c, d) => c + d;

Notice how the arrow function eliminates the use of curly braces {}, and function and return keywords when the function consists of a single expression. In other words, an arrow function returns the results implicitly without the need to use the return keyword when the function body contains a single expression. This enables developers to write more readable and cleaner code.

Also read: Top 10 JavaScript Frameworks for Developers

Closures and the Module Pattern

Closures are a fundamental feature of JS. They enable us to bundle the functionality and data into a single package, making code maintenance easier. Developers can also utilize Closures to create modular, encapsulated, and private code in JavaScript.

The example code below demonstrates how closures can be used to declare objects with private methods and states:

function counter() {
let num = 0;
return {
increment: function() {
getCount: function() {
return num;

const mycounter = counter();

In the above code, Closures are utilized to provide encapsulation as they keep the ‘num’ variable private to the counter function.

Promises and Async/Await

Promises are a helpful feature in JavaScript that enables developers to handle asynchronous operations more efficiently. A Promise can either be fulfilled, pending, or rejected.

Promises can represent a value that is:

  • Currently available
  • Will be available in the future.
  • Will never be available.

Using Promises with Async/Await enables us to handle errors in a synchronous way within asynchronous code. This makes the code simpler and more readable.

The code below shows how Async/Await can be used with a Promise to catch errors:

async function combinedExample() {
try {
const result = await fetchData(); // Using Async/Await with a Promise
} catch (error) {
console.error(‘An error occurred:’, error);

The Power of Object Destructuring

Beyond array destructuring, JavaScript also allows you to destructure objects. This means you can extract properties from objects and assign them to separate variables.

The example code below shows how object destructuring helps write cleaner and concise code and improves code readability:

// Without object destructuring
const member = { name: ‘Bill’, age: 32 };
const name =;
const age = member.age;

// With object destructuring
const { name, age } = member;
console.log(name); // Output: Bill
console.log(age); // Output: 32

You can also destructure nested objects:

const member = {
name: ‘Bill’,
age: 32,
address: {
city: ‘xyz city’,
// Nested object destructuring
const { name, age, address: { city } } = member;
console.log(name); // Output: Bill
console.log(city); // Output: xyz city

Functional Programming Concepts

JavaScript supports functional programming, allowing you to improve code readability and maintainability. Moreover, functions created using functional programming concepts are usually reusable. Here are some functional programming concepts that JavaScript supports:

Higher-Order Functions

In functional programming, we can pass functions as arguments to other functions, assign functions to variables, or return them as values. Higher-order functions are essentially the functions that return other functions or take them as arguments.


We can use the filter function to define a new array containing elements that pass a specific condition.


The reduce function is mostly used for addition or aggregating data as it allows us to combine the elements of an array into a single value.

Memoization for Performance Optimization

Memoization is a helpful technique in programming languages that allows us to optimize the performance of functions, especially the ones that demand lots of computational resources. You can also utilize this technique for functions that need to be called frequently with the same arguments.

With memoization, we store the results of complex, time-consuming, and computationally expensive. And when the same input occurs, we return the cached results instead of re-computing the function. Hence, memoization helps eliminate redundant computations, improving the overall performance of complex functions.

Also read: Best 10 JavaScript Development Tools

Functional Composition

You can leverage the functional composition technique in JavaScript to combine several functions and create a separate, new function. The Output of one function is essentially the input of the other function in functional composition. This helps developers create and execute complex operations efficiently by combining multiple modular functions.

Leveraging ES6+ Features for Modern Development

ES6, also called ECMAScript, is known as a major update to the JavaScript programming language. In this update, various new features and improvements were introduced, enabling developers to write more readable and maintainable code. Leveraging ES6+ features like spread/rest operators, arrow functions, array and object destructuring, async/await, etc., is at the heart of modern web development.


JavaScript is undoubtedly the most popular programming language in the realm of web development. While it is easy to learn, even for beginners, it involves continuous learning as new tricks and techniques keep emerging with time. The article explores ten great JavaScript tricks for enhancing coding skills. Implementing these tricks and techniques can help you write more readable, concise, and maintainable code.

Frequently Asked Questions (FAQs)

Why should I bother learning advanced JavaScript tricks?

Learning advanced JavaScript tricks and techniques discussed in this article can help you write more readable, concise, and maintainable code.

What is destructing in JavaScript, and how can it benefit my code?

JavaScript allows you to destructure or extract elements of arrays or properties of objects and assign them to separate variables. It allows you to write cleaner, concise, and readable code, improving code maintainability.

What’s the advantage of using arrow functions and implicit returns?

Arrow functions allow you to write concise code, which is easier to maintain.

What are some of the best JavaScript frameworks?

Some of the most popular JavaScript frameworks include Ext JS, React and Vue. Ext JS is a JavaScript UI framework for creating web and mobile applications. The efficient framework has 140+ pre-built UI components and supports two-way data binding. React is also among the most popular JS frameworks. The open-source JavaScript framework allows us to create interactive web apps and is known for virtual DOM.

Top Coding Bootcamps for Career Changers

Like starting a new business switching to a coding career that is successful requires you to study from the top. You must learn the best practices in coding and get a job once you’ve completed the course for an effective career change. There are many coding bootcamps that you can come to.

If you choose the right coding bootcamp, you will learn coding and be prepared for job opportunities at leading tech companies. Here is a list of the top paid and free coding bootcamps for those who want to change careers.

Top Coding Bootcamps for Career Changers

1. freeCodeCamp

FreeCodeCamp is a free coding bootcamp for those who want to learn to code. freeCodeCamp offers interactive courses covering CSS, JavaScript, SQL, HTML, Python, and Linux and is the best boot camp for web developers.

After completing the freeCodeCamp course The bootcamp tests your coding skills through tasks that you must construct successfully and submit an in-depth report on the procedure.

freeCodeCamp’s projects draw on what the lesson taught you. Some projects can be difficult and you might have to go back to the lesson in order to comprehend and apply the lessons it imparts. However, the challenge of these assignments will shape and strengthen the foundation for your success in changing careers.

If you’re comfortable with a certain degree of coding then you’re free to start over and go back to the course you’re familiar with. To get badges and certificates upon completion of the bootcamp, must pass the assignments in all lessons that you skipped.

Also read: 8 Best Generative AI Tools in Code Generation/Coding

2. Fullstack Academy

Fullstack Academy is a coding bootcamp that is aware of the varied nature and timetable of those who change careers. To accommodate them the school breaks down its classes into various sessions, which include classes that are part-time, an all-day course a totally online program, and a program designed for women working in tech.

It is possible to think of Fullstack Academy as a boot training program that’s tailored to what you’d like to learn. But, their courses run for seventeen to thirty-one weeks which means there’s a lot of time. Additionally, Fullstack Academy is not cost-free. The entire program is cost-based, and the prices range between $17,000 and $19,811, as of 2023.

Although its services aren’t cost-free, the choices for paying, benefits, and scholarships are incredibly flexible. Fullstack Academy also encourages veterans to get into coding with highly rewarding rewards and scholarship opportunities.

If you are within the US and would prefer to learn to code on a campus, Fullstack Academy runs an online coding bootcamp on campus within New York.

3. Actualize

Actualize is a pay-per-hour boot camp aimed at helping individuals master the art of coding. It offers a hands-on learning experience through grouping individuals who are interested in learning to code. In the group, you can find both individual groups and projects that encourage learning and working in teams and individually.

Career changers are positioned to be able to choose between working as an individual or working with others. Actualize’s bootcamp lasts for 17 weeks, which is split by five weeks of prework in addition to 12 weeks of live training.

They go one step further and provide assistance until you get your first job in coding with or without the Jobs Hacking System.

4. SkillCrush

Another coding bootcamp SkillCrush is completely free and that offer does not stop there. They also teach the basics and free coding. SkillCrush can also be a training program to learn UX/UI design, which it’s a good option to consider when evaluating the best UX/UI design Boot camps.

This bootcamp is aware of the fact that UI/UX design as well as coding work hand-in-hand and will show you how to use these two disciplines separately or in combination. SkillCrush’s curriculum which covers both of these tracks will provide you with the necessary knowledge that you require to prepare to get a job entry-level in any field.

When you sign up with SkillCrush you’ll be granted access to free classes on UI/UX Design as well as 12 classes for programming, which comprise HTML as well as CSS, JavaScript Fundamentals, Introduction to JavaScript React, and Coding responsive websites.

5. Codecademy

With Codecademy it is possible to learn to code free or opt for advanced classes for a cost. Although the paid courses include additional benefits such as using your skills to code on your mobile device you are able to make use of the free version of Codecademy to get useful coding techniques.

If you’re not sure whether a shift in your career into coding might be the ideal choice for you, then there is no reason not to profit from this opportunity provided by Codecademy. You can sign up for their free program and try the waters to determine whether you are a good fit for coding.

Signing up for the Codecademy’s no-cost bootcamp grants students access to educational materials that are part of a structured syllabus that will equip them with knowledge about HTML, JavaScript, SQL, Python, ChatGPT, C++, and other areas.

6. Springboard

The paid coding bootcamp teaches additional courses in coding, cyber security, and data analytics in the event that any of these do catch your attention. The program is flexible and can run for six to nine months with schedules that are tailored to your school or work schedule.

The Springboard BootCamp begins at the beginning. Coding BootCamp At the beginning of the program, you must complete a questionnaire-like test that helps you assess your understanding of programming.

One factor that affects springboard’s success in Coding bootcamp is the mentorship program that assigns a specific mentor to each participant. The mentor’s job is to aid you in navigating through the various resources that are available and also guide your progress as you complete important tasks.

Springboard is proud to be efficient, to the extent that it offers a six-month money-back guarantee, which gives you a full refund in the event that you do not get an offer upon completing its boot camp.

Also read: Data Analytics Bootcamp for Practical Knowledge

7. Flatiron School

Flatiron School is another bootcamp offering both paid and free courses to help you learn to code. Tech prep for free is intended to give you an introductory understanding of programming languages, including HTML, CSS, SQL and JavaScript.

If a change to a career in coding career like a lot of work to absorb it is recommended to take these classes for beginners a shot to make it easier for you. At Flatiron School, you can decide to learn to code in just 15 weeks, with full-time participation. Or at least 20 weeks in self-paced instruction.

8. Hack Reactor

Hack Reactor by Galvanize is a coding bootcamp designed for job changers as well as veterans, military personnel, and anyone looking to master the art of programming. After completing Hack Reactor’s Technical Admissions Assessment (TAA) which is a test to be admitted into Hack Reactor, there are three coding programs that you can select from.

There are three bootcamps: the Full-Time Beginner Bootcamp, the Full-Time Intermediate Bootcamp, as well as the part-time Beginner Bootcamp. This Full-Time Beginner’s Bootcamp runs for 19 weeks and is appropriate for those who don’t have prior experience in programming.

However, The Full-Time Intermediate Bootcamp is going to be more appropriate if you are a bit familiar with programming. The Part-time Beginner Bootcamp is the ideal choice for those who are still employed in a job but want to get into coding in a part-time manner.


With structured courses including mentorship and training programs as well as access to a group of fellow students learning to code, bootcamps in coding can help you start an occupation in coding quickly.

There’s no need to fret about the cost of learning to code since there are paid and free coding bootcamps to choose from. These coding bootcamps offer up to an 80% chance of being employed at the end of the course, so there’s a lot you can take on.