In web development, JavaScript continues to reign as a cornerstone of creativity and functionality. As we navigate through 2024, the language has not only matured but also expanded its capabilities, empowering developers to build more intuitive and dynamic user experiences. This article dives into some of the most innovative and practical JavaScript examples that have set the standard for excellence this year.
JavaScript stands as a widely-used language in web development, accessible to both beginners and seasoned coders alike. Engaging with coding exercises is beneficial for honing one’s reasoning and programming abilities.
The range of JavaScript coding examples covers basic elements such as Objects, Functions, and Arrays, and extends to more complex concepts like Object-Oriented Programming and managing events. These exercises aim to boost your understanding of JavaScript and solidify your coding expertise by applying them to real-world scenarios.
JavaScript Programming Examples Tutorial Oversaw Overview
¡》Simplifying Complexities with Functions
JavaScript’s true power lies in its functions – the building blocks that simplify complex tasks. For instance, consider a function that dynamically generates charts based on user data. It’s not just about plotting points; it’s about crafting a story from numbers.
javascript
Function createDynamicChart(data) {
// Chart creation logic using data
}¡¡》Asynchronous Magic with Async/Await
The async/await pattern has revolutionized how we handle asynchronous operations. Picture a seamless user login process that feels instantaneous, thanks to the non-blocking nature of JavaScript’s asynchronous functions.
JavaScript
Async function userLogin(username, password) {
Const userData = await verifyCredentials(username, password);
// Further logic after user verification
}¡¡¡》Interactive UI Components
JavaScript’s frameworks have given rise to interactive components that respond to user actions with grace and fluidity. A ‘like’ button that animates and changes color upon clicking is a small yet impactful example of JavaScript’s prowess.
javascript
Function animateLikeButton(buttonElement) {
// Animation logic for the like button
}Complete JavaScript Programming Examples Tutorial
1. JavaScript ES6 Examples
In this section, you’ll find a curated collection of key JavaScript ES6 coding examples. Whether you’re just starting out or you’re a seasoned JavaScript developer, this compilation offers a valuable set of exercises to practice and refine your programming skills. Just scroll down to explore.
| 1 | How to check two numbers are approximately equal in JavaScript? |
| 2 | How to declare variables in different ways in JavaScript? |
| 3 | How to replace the names of multiple object keys with the values provided using JavaScript? |
| 4 | How to get the first non-null/undefined argument in JavaScript? |
| 5 | Shorthand Syntax for Object Property Value in ES6 |
| 6 | Motivation to bring symbols in ES6 |
| 7 | What are decorators and how are they used in JavaScript? |
| 8 | How to use Typescript with native ES6 Promises? |
| 9 | How to clone array in ES6? |
| 10 | Array Helper Methods in ES6 |
| 11 | How to dynamically load JS inside JS? |
2. JavaScript Objects Examples
In this part of our guide, we’ve gathered essential JavaScript samples focusing on objects. These are perfect for those who are new to JavaScript or for developers who want to sharpen their skills. Dive into the examples we’ve provided below to enhance your understanding of object-oriented programming in JavaScript.
| 1 | How to check if a value is object-like in JavaScript? |
| 2 | How to compare two objects to determine the first object contains equivalent property values to the second object in JavaScript? |
| 3 | How to check if the provided value is an object created by the Object constructor in JavaScript? |
| 4 | How to convert two-dimensional array into an object in JavaScript? |
| 5 | How to create an object from two arrays in JavaScript? |
| 6 | Get the index of an object by its property. |
| 7 | How to use array that include and check an object against a property of an object? |
| 8 | How to print object by id in an array of objects in JavaScript? |
| 9 | How to create dynamic values and objects in JavaScript? |
| 10 | How to add a property to a JavaScript object using a variable as the name? |
| 11 | How to implement a filter() for Objects in JavaScript? |
| 12 | How to get all the methods of an object using JavaScript? |
| 13 | How to convert an Object {} to an Array [] of key-value pairs in JavaScript? |
| 14 | How to iterate over a JavaScript object? |
| 15 | How to add an object to an array in JavaScript? |
| 16 | How to get the last item of JavaScript object? |
| 17 | How to remove Objects from Associative Array in JavaScript? |
| 18 | How to remove duplicates from an array of objects using JavaScript? |
| 19 | How to get a key in a JavaScript object by its value? |
| 20 | How to push an array into the object in JavaScript? |
| 21 | How to get a subset of a javascript object’s properties? |
| 22 | How to check a JavaScript Object is a DOM Object? |
| 23 | How to remove a property from JavaScript object? |
| 24 | Flatten JavaScript objects into a single-depth Object |
| 25 | Creating objects in JavaScript (4 Different Ways) |
| 26 | Convert URL parameters to a JavaScript Object |
3. JavaScript Function Examples
This section is dedicated to a handpicked selection of JavaScript function-based programming examples. If you’re on the hunt for practice questions that dive into JavaScript functions, simply scroll down to find a wealth of resources to test and improve your coding prowess.
| 1 | Functions in JavaScript |
| 2 | Difference between regular functions and arrow functions |
| 3 | How to iterate over a callback n times in JavaScript ? |
| 4 | How to negate a predicate function in JavaScript ? |
| 5 | How to make a word count in textarea using JavaScript ? |
| 6 | How to add an element horizontally in Html page using JavaScript? |
| 7 | How to add fade-out effect using pure JavaScript ? |
| 8 | How to add fade-in effect using pure JavaScript? |
| 9 | How to implement a function that enable another function after specified time using JavaScript ? |
| 10 | Ways to implement Object.values() in JavaScript |
| 11 | How to get the index of the function in an array of functions which executed the fastest in JavaScript? |
| 12 | How to find out the caller function in JavaScript? |
| 13 | When to use PreventDefault( ) vs Return false in JavaScript? |
| 14 | What is the difference between call and apply in JavaScript? |
| 15 | Using the function* Declaration in JavaScript |
| 16 | Create a Mobile Toggle Navigation Menu using HTML, CSS and JavaScript |
| 17 | How to change the value of a global variable inside of a function using JavaScript ? |
| 18 | How to wait for a promise to finish before returning the variable of a function? |
| 19 | How to override a JavaScript function ? |
| 20 | How to include a JavaScript file in another JavaScript file ? |
| 21 | How to get the javascript function parameter names/values dynamically? |
| 22 | How to declare the optional function parameters in JavaScript ? |
| 23 | How to check a function is defined in JavaScript ? |
| 24 | How to measure time taken by a function to execute using JavaScript? |
| 25 | Passing a function as a parameter in JavaScript |
| 26 | How to call function from it name stored in a string using JavaScript? |
| 27 | How to create a function that invokes each provided function with the arguments it receives using JavaScript ? |
| 28 | How to create a function that invokes function with partials appended to the arguments in JavaScript ? |
| 29 | How to remove the key-value pairs corresponding to the given keys from an object using JavaScript ? |
| 30 | How to create a function that invokes each provided function with the arguments it receives using JavaScript ? |
4. JavaScript Recursion Examples
As you continue through our guide, you’ll encounter a variety of JavaScript programming examples that illustrate the concept of recursion. These examples are designed to deepen your understanding and help you master recursive functions in JavaScript. Just keep scrolling to explore and learn more through practical application.
| 1 | Count pairs up to N having sum equal to their XOR |
| 2 | Count substrings having frequency of a character exceeding that of another character in a string |
| 3 | Sort the array using slow sort |
| 4 | Subtract 1 from a number represented as Linked List |
| 5 | Maximize sum of odd-indexed array elements by repeatedly selecting at most 2*M array elements from the beginning |
| 6 | Count ways to represent a number as sum of perfect squares |
| 7 | Number of M-length sorted arrays that can be formed using first N natural numbers |
| 8 | Program to insert an element at the Bottom of a Stack |
| 9 | Generate an array representing GCD of nodes of each vertical level of a Binary Tree |
| 10 | Minimum number of cameras required to monitor all nodes of a Binary Tree |
| 11 | Maximum number of plates that can be placed from top to bottom in increasing order of size |
| 12 | Median of all nodes from a given range in a Binary Search Tree ( BST ) |
| 13 | Largest element in an N-ary Tree |
| 14 | Lowest Common Ancestor of the deepest leaves of a Binary Tree |
| 15 | Sum of subsets nearest to K possible from two given arrays |
| 16 | Minimum cost of purchasing at least X chocolates |
| 17 | Maximize cost of forming a set of words using given set of characters |
| 18 | Maximum product of a pair of nodes from largest connected component in a Graph |
| 19 | Count paths in a Binary Tree consisting of nodes in non-decreasing order |
| 20 | Tower of Hanoi |
| 21 | Length of longest subset consisting of A 0s and B 1s from an array of strings |
| 22 | Check if a path exists from a given cell to any boundary element of the Matrix with sum of elements not exceeding K |
| 23 | Modify Binary Tree by replacing each node with the sum of its Preorder Predecessor and Successor |
| 24 | Maximum score possible by removing substrings made up of single distinct character |
| 25 | Count all unique outcomes possible by performing S flips on N coins |
| 26 | Length of the longest path ending at vertex V in a Graph |
| 27 | Generate all possible combinations of K numbers that sums to N |
| 28 | Minimize difference between sum of two K-length subsets |
5. JavaScript Number Examples
Dive into our collection of numerical JavaScript programming examples. You’ll discover how to handle floating-point arithmetic, create a currency converter, and tackle other number-centric challenges. These examples are designed to strengthen your skills in managing numerical data within your JavaScript projects.
| 1 | How to add float numbers using JavaScript ? |
| 2 | Currency Converter in JavaScript |
| 3 | How to get median of an array of numbers in JavaScript ? |
| 4 | Round off a number to the next multiple of 5 using JavaScript |
| 5 | Convert a negative number to positive in JavaScript |
| 6 | Find quotient and remainder by dividing an integer in JavaScript |
| 7 | How to flatten a given array up to the specified depth in JavaScript ? |
| 8 | How to get the standard deviation of an array of numbers using JavaScript ? |
| 9 | How to evaluate binomial coefficient of two integers n and k in JavaScript ? |
| 10 | How to calculate greatest common divisor of two or more numbers/arrays in JavaScript ? |
| 11 | How to test a value x against predicate function and returns fn(x) or x in JavaScript ? |
| 12 | How to check two numbers are approximately equal in JavaScript ? |
| 13 | How to create slider to map a range of values in JavaScript ? |
| 14 | RMS Value Of Array in JavaScript |
6. JavaScript Array Examples
In this segment, we present a diverse array of JavaScript programming examples cantered around arrays. This collection serves as a practical set for those seeking to enhance their array manipulation skills within JavaScript. Browse through the examples provided here to deepen your understanding and proficiency with arrays.
| 1 | How to get removed elements of a given array until the passed function returns true in JavaScript ? |
| 2 | How to filter values from an array for which the comparator function does not return true in JavaScript ? |
| 3 | How many numbers in the given array are less/equal to the given value using the percentile formula ? |
| 4 | How to remove specific elements from the left of a given array of elements using JavaScript ? |
| 5 | How to convert a 2D array to a comma-separated values (CSV) string in JavaScript ? |
| 6 | How to count number of occurrences of repeated names in an array of objects in JavaScript ? |
| 7 | How to count number of data types in an array in JavaScript ? |
| 8 | How to remove falsy values from an array in JavaScript ? |
| 9 | How to move specified number of elements to the end of an array in JavaScript ? |
| 10 | How to flatten a given array up to the specified depth in JavaScript ? |
| 11 | How to get the standard deviation of an array of numbers using JavaScript ? |
| 12 | How to get symmetric difference between two arrays in JavaScript ? |
| 13 | How to get n largest elements from array in JavaScript ? |
| 14 | How to find every element that exists in any of two given arrays once using JavaScript ? |
| 15 | How to find all elements in a given array except for the first one using JavaScript ? |
| 16 | How to remove n elements from the end of a given array in JavaScript ? |
| 17 | How to create an object from two arrays in JavaScript? |
| 18 | How to create a string by joining the elements of an array in JavaScript ? |
| 19 | How to splice an array without mutating the original Array? |
| 20 | Swapping two array elements in a single line using JavaScript |
| 21 | How to create HTML list from JavaScript array ? |
| 22 | How to get the same value from another array and assign to object of arrays? |
| 23 | How to truncate an array in JavaScript ? |
| 24 | How to print object by id in an array of objects in JavaScript? |
| 25 | How to convert a number into array in JavaScript ? |
| 26 | How to print unique elements from two unsorted arrays using JavaScript ? |
| 27 | How to transform a JavaScript iterator into an array? |
| 28 | How to add elements to an existing array dynamically in JavaScript ? |
| 29 | How to replace an item from an array in JavaScript? |
7. JavaScript DateTime Examples
This section brings together crucial JavaScript programming examples that focus on Date and Time operations. These carefully selected examples aim to enhance your grasp of handling date and time functionalities in JavaScript, providing you with the knowledge to implement them effectively in your projects.
| 1 | How to calculate days left until next Christmas using JavaScript ? |
| 2 | How to get tomorrow’s date in a string format in JavaScript ? |
| 3 | How to convert UTC date time into local date time using JavaScript ? |
| 4 | How to check for two timestamp for the same day? |
| 5 | How to get seconds since epoch in JavaScript? |
| 6 | How to compare date part only without comparing time in JavaScript? |
| 7 | How to check the input date is equal to today’s date or not using JavaScript ? |
| 8 | Get the relative timestamp difference between dates in JavaScript |
| 9 | How to check if one date is between two dates in JavaScript ? |
| 10 | How to check if the given date is weekend ? |
| 11 | How to format current date in MM/DD/YYYY HH:MM:SS format using JavaScript ? |
| 12 | How to convert date to another timezone in JavaScript ? |
| 13 | How to check if date is less than 1 hour ago using JavaScript ? |
| 14 | How to check a date is valid or not using JavaScript ? |
| 15 | How to get the day and month of a year using JavaScript ? |
| 16 | How to store all dates in an array present in between given two dates in JavaScript ? |
| 17 | How to convert seconds to time string format hh:mm:ss using JavaScript ? |
| 18 | How do you display JavaScript datetime in 12 hour AM/PM format? |
| 19 | Converting milliseconds to date. |
| 20 | How to calculate the date three months prior using JavaScript ? |
| 21 | How to calculate minutes between two dates in JavaScript ? |
| 22 | How to calculate the yesterday’s date in JavaScript ? |
| 23 | How to get the first day of the year in JavaScript ? |
| 24 | How to get the first and last date of current month using JavaScript ? |
| 25 | How to remove time from date using JavaScript ? |
| 26 | How to get the current date in JavaScript ? |
| 27 | How to get the current date and time in seconds? |
8. JavaScript String/Text Examples
Venture into the realm of text manipulation with our JavaScript string examples. These exercises are crafted to refine your ability to process and manage text data, ensuring you can navigate through strings with ease and confidence in your JavaScript endeavours.
| 1 | How to convert a string into a integer without using parseInt() function in JavaScript ? |
| 2 | How to generate all combinations of a string in JavaScript ? |
| 3 | How to replace line breaks with <br> using JavaScript ? |
| 4 | How to split multiline string into an array of lines in JavaScript ? |
| 5 | How to convert image into base64 string using JavaScript ? |
| 6 | How to check whether a passed string is palindrome or not in JavaScript ? |
| 7 | How to get the number of occurrences of each letter in specified string in JavaScript ? |
| 8 | How to find the longest word within the string in JavaScript ? |
| 9 | How to find unique characters of a string in JavaScript ? |
| 10 | How to create an element from a string in JavaScript? |
| 11 | How to get the first three characters of a string using JavaScript ? |
| 12 | How to check a given string is an anagram of another string in JavaScript ? |
| 13 | How to create half of the string in uppercase and the other half in lowercase? |
| 14 | Convert a number to a string in JavaScript |
| 15 | How to get a number of vowels in a string in JavaScript? |
| 16 | Difference between single-quoted and double-quoted strings in JavaScript |
| 17 | Convert user input string into regular expression using JavaScript |
| 18 | How to add method to String class in JavaScript? |
| 19 | How to convert long number into abbreviated string in JavaScript ? |
| 20 | How to get the longest string in an array using JavaScript ? |
| 21 | How to remove all Non-ASCII characters from the string using JavaScript ? |
| 22 | How to change the Content of a <textarea> using JavaScript ? |
| 23 | How to globally replace a forward slash in a JavaScript string ? |
| 24 | How to insert a string at a specific index in JavaScript ? |
| 25 | How to create hash from string in JavaScript ? |
| 26 | How to pad a string to get the determined length using JavaScript ? |
| 27 | How to get nth occurrence of a string in JavaScript ? |
| 28 | How to remove a character from string in JavaScript ? |
| 29 | How to convert string into float in JavaScript? |
| 30 | How to convert string to camel case in JavaScript ? |
9. JavaScript Regular Expression Examples
This section is your gateway to mastering Regular Expressions in JavaScript. The examples provided will guide you through various patterns and methods, such as `break` and `clone`, enhancing your ability to search, validate, and manipulate strings with precision. Engage with these exercises to become adept at using Regular Expressions in your JavaScript code.
| 1 | How to replace line breaks with <br> using JavaScript ? |
| 2 | How to clone a given regular expression in JavaScript ? |
| 3 | How to convert a string into kebab case using JavaScript ? |
| 4 | How to validate URL using regular expression in JavaScript? |
10. JavaScript DOM Examples
This segment of our guide is devoted to the Document Object Model (DOM) in JavaScript, featuring 15 practical examples. These exercises will equip you with the techniques to store data within the DOM, assign classes to `div` elements, and much more. Each example is designed to build your skills and confidence in manipulating the DOM for dynamic web applications.
| 1 | How to store data in the DOM ? |
| 2 | How to specify the URL that will process the data supplied through input(s) when the form is submitted? |
| 3 | How to store data to DOM ? |
| 4 | How to get elements of specific class inside a div ? |
| 5 | How to check the given element has the specified class in JavaScript ? |
| 6 | How getElementByID works in JavaScript ? |
| 7 | What is shadow root and how to use it ? |
| 8 | What is the use of the “no-js” class in HTML ? |
| 9 | How to Combine multiple elements and append the result into a div using JavaScript ? |
| 10 | How to get the information from a meta tag using JavaScript? |
| 11 | How to check if an element is visible in DOM ? |
| 12 | How to check a JavaScript Object is a DOM Object ? |
| 13 | How to remove an HTML element using JavaScript ? |
| 14 | Replace a DOM element with another DOM element in place |
| 15 | Set the focus to HTML form element using JavaScript |
11. JavaScript JSON Examples
In our JSON section, we’ve curated a selection of JavaScript examples that utilize JSON. Perfect for those aiming to polish their JSON handling skills, these examples provide hands-on experience with parsing, stringifying, and applying JSON in various scenarios. Take the plunge and start practicing with the examples below for effective learning.
| 1 | How to read information from nested objects in DataTables ? |
| 2 | How to Convert CSV to JSON file and vice-versa in JavaScript ? |
| 3 | Working with APIs in JavaScript |
| 4 | Difference Between JSON and BSON |
| 5 | Difference Between JSON and AJAX |
| 6 | How to convert JSON results into a date using JavaScript ? |
| 7 | How to swap key and value of JSON element using JavaScript ? |
| 8 | How to send a JSON object to a server using Javascript? |
| 9 | How to Convert JS Object to JSON String in JQuery/Javascript? |
| 10 | How to convert JSON data to a html table using JavaScript/jQuery ? |
| 11 | Deserializing a JSON into a JavaScript object |
| 12 | How to pretty print JSON string in JavaScript ? |
| 13 | Check if a key exists inside a JSON object |
| 14 | How to add an element to a JSON object? |
| 15 | Remove a JSON attribute |
| 16 | Interesting facts about JSON |
| 17 | Difference between JSON and XML |
| 18 | Converting JSON text to JavaScript Object |
| 19 | JSON | modify an array value of a JSON object |
12. JavaScript Mini Projects
In this final section, we present a series of mini JavaScript exercises. These compact examples are designed to further sharpen your logical abilities and provide quick, yet effective challenges to test your JavaScript knowledge. Engage with these to elevate your problem-solving skills in coding.
| 1 | Design a Text Editor using Javascript |
| 2 | Generate a Random Birthday Wishes using JavaScript |
| 3 | Design a Digital Clock using JavaScript |
| 4 | Design a Todo List using JavaScript |
| 5 | Create a Mobile Toggle Navigation Menu using JavaScript |
| 6 | Simple Tic-Tac-Toe Game using JavaScript |
| 7 | Design a Simple Calculator using JavaScript |
| 8 | Design a Scientific Calculator using JavaScript |
| 9 | Create an Image Lightbox Gallery using JavaScript |
| 10 | Preview Image on click in Gallery View using JavaScript |
| 11 | Add filter with Portfolio Gallery using JavaScript |
| 12 | Create a Mobile Toggle Navigation Menu using JavaScript |
| 13 | Create a Hoverable Side Navigation using JavaScript |
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Conclusion:
The examples highlighted above are a testament to JavaScript’s versatility and its role in enhancing the web’s interactivity. As we continue to push the boundaries of what’s possible, JavaScript remains an indispensable ally to developers worldwide. Its evolution is a journey of endless possibilities, and 2024 has been a year of remarkable milestones in this journey.
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