JavaScript Programming Examples Last Updated : 24 Jul, 2025 Comments Improve Suggest changes Like Article Like Report JavaScript is a dynamic, widely-used programming language that plays a pivotal role in modern web development. Whether you're a beginner or an experienced developer, practicing JavaScript programming examples is an excellent way to refine your coding skills, enhance your problem-solving abilities, and better understand core programming conceptsHere, we explore a wide array of JavaScript programming examples designed to enhance both beginners' and advanced developers' understanding. The examples are categorized into sections that cover key JavaScript topics and demonstrate practical usage through code examples.JavaScript Programming ExamplesJavaScript ES6 ExamplesThis section features essential ES6 JavaScript programming examples. Whether you’re just starting or have mastered JavaScript, these examples provide a solid foundation for mastering modern JavaScript features.Sr. No.Articles1How to check two numbers are approximately equal in JavaScript?2How to declare variables in different ways in JavaScript?3How to replace the names of multiple object keys with the values provided using JavaScript?4How to get the first non-null/undefined argument in JavaScript?5Shorthand Syntax for Object Property Value in ES66Motivation to bring symbols in ES67What are decorators and how are they used in JavaScript?8How to use Typescript with native ES6 Promises?9How to clone array in ES6?10Array Helper Methods in ES611How to dynamically load JS inside JS?JavaScript Objects ExamplesIn this section, we've collected important JavaScript examples that deal with objects. Whether you're just starting or you're already familiar with JavaScript and want to practice, take a look at the examples below.Sr. No.Articles1How to check if a value is object-like in JavaScript?2How to compare two objects to determine the first object contains equivalent property values to the second object in JavaScript?3How to check if the provided value is an object created by the Object constructor in JavaScript?4How to convert two-dimensional array into an object in JavaScript?5How to create an object from two arrays in JavaScript?6Get the index of an object by its property.7How to use array that include and check an object against a property of an object?8How to print object by id in an array of objects in JavaScript?9How to create dynamic values and objects in JavaScript?10How to add a property to a JavaScript object using a variable as the name?11How to implement a filter() for Objects in JavaScript?12How to get all the methods of an object using JavaScript?13How to convert an Object {} to an Array [] of key-value pairs in JavaScript?14How to iterate over a JavaScript object?15How to add an object to an array in JavaScript?16How to get the last item of JavaScript object?17How to remove Objects from Associative Array in JavaScript?18How to remove duplicates from an array of objects using JavaScript?19How to get a key in a JavaScript object by its value?20How to push an array into the object in JavaScript?21How to get a subset of a javascript object’s properties?22How to check a JavaScript Object is a DOM Object?23How to remove a property from JavaScript object?24Flatten JavaScript objects into a single-depth Object25Creating objects in JavaScript (4 Different Ways)26Convert URL parameters to a JavaScript ObjectJavaScript Function ExamplesWithin this section, we've compiled important JavaScript Functions-based programming examples. So if you are seeking JavaScript function-based practice question the deep down below.Sr. No.Articles1Functions in JavaScript2Difference between regular functions and arrow functions3How to iterate over a callback n times in JavaScript ?4How to negate a predicate function in JavaScript ?5How to make a word count in textarea using JavaScript ?6How to add an element horizontally in Html page using JavaScript?7How to add fade-out effect using pure JavaScript ?8How to add fade-in effect using pure JavaScript?9How to implement a function that enable another function after specified time using JavaScript ?10Ways to implement Object.values() in JavaScript11How to get the index of the function in an array of functions which executed the fastest in JavaScript?12How to find out the caller function in JavaScript?13When to use PreventDefault( ) vs Return false in JavaScript?14What is the difference between call and apply in JavaScript?15Using the function* Declaration in JavaScript16Create a Mobile Toggle Navigation Menu using HTML, CSS and JavaScript17How to change the value of a global variable inside of a function using JavaScript ?18How to wait for a promise to finish before returning the variable of a function?19How to override a JavaScript function ?20How to include a JavaScript file in another JavaScript file ?21How to get the javascript function parameter names/values dynamically?22How to declare the optional function parameters in JavaScript ?23How to check a function is defined in JavaScript ?24How to measure time taken by a function to execute using JavaScript?25Passing a function as a parameter in JavaScript26How to call function from it name stored in a string using JavaScript?27How to create a function that invokes each provided function with the arguments it receives using JavaScript ?28How to create a function that invokes function with partials appended to the arguments in JavaScript ?29How to remove the key-value pairs corresponding to the given keys from an object using JavaScript ?30How to create a function that invokes each provided function with the arguments it receives using JavaScript ?JavaScript Recursion ExamplesFollow down the below section you will get multiple JavaScript programming examples based on Recursion.Sr. No.Articles1Count pairs up to N having sum equal to their XOR2Count substrings having frequency of a character exceeding that of another character in a string3Sort the array using slow sort4Subtract 1 from a number represented as Linked List5Maximize sum of odd-indexed array elements by repeatedly selecting at most 2*M array elements from the beginning6Count ways to represent a number as sum of perfect squares7Number of M-length sorted arrays that can be formed using first N natural numbers8Program to insert an element at the Bottom of a Stack9Generate an array representing GCD of nodes of each vertical level of a Binary Tree10Minimum number of cameras required to monitor all nodes of a Binary Tree11Maximum number of plates that can be placed from top to bottom in increasing order of size12Median of all nodes from a given range in a Binary Search Tree ( BST )13Largest element in an N-ary Tree14Lowest Common Ancestor of the deepest leaves of a Binary Tree15Sum of subsets nearest to K possible from two given arrays16Minimum cost of purchasing at least X chocolates17Maximize cost of forming a set of words using given set of characters18Maximum product of a pair of nodes from largest connected component in a Graph19Count paths in a Binary Tree consisting of nodes in non-decreasing order20Tower of Hanoi21Length of longest subset consisting of A 0s and B 1s from an array of strings22Check if a path exists from a given cell to any boundary element of the Matrix with sum of elements not exceeding K23Modify Binary Tree by replacing each node with the sum of its Preorder Predecessor and Successor24Maximum score possible by removing substrings made up of single distinct character25Count all unique outcomes possible by performing S flips on N coins26Length of the longest path ending at vertex V in a Graph27Generate all possible combinations of K numbers that sums to N28Minimize difference between sum of two K-length subsetsJavaScript Number ExamplesExplore the list of number-based JavaScript programming examples. Here you will get examples of how to add float numbers, how to make a currency converter, and more number-based examples.Sr. No.Articles1How to add float numbers using JavaScript ?2Currency Converter in JavaScript3How to get median of an array of numbers in JavaScript ?4Round off a number to the next multiple of 5 using JavaScript5Convert a negative number to positive in JavaScript6Find quotient and remainder by dividing an integer in JavaScript7How to flatten a given array up to the specified depth in JavaScript ?8How to get the standard deviation of an array of numbers using JavaScript ?9How to evaluate binomial coefficient of two integers n and k in JavaScript ?10How to calculate greatest common divisor of two or more numbers/arrays in JavaScript ?11How to test a value x against predicate function and returns fn(x) or x in JavaScript ?12How to check two numbers are approximately equal in JavaScript ?13How to create slider to map a range of values in JavaScript ?14RMS Value Of Array in JavaScriptJavaScript Array ExamplesIf you are looking for a practice set of Array programs, then in this section we have mentioned multiple Array-based JavaScript programming examples.Sr. No.Articles1How to get removed elements of a given array until the passed function returns true in JavaScript ?2How to filter values from an array for which the comparator function does not return true in JavaScript ?3How many numbers in the given array are less/equal to the given value using the percentile formula ?4How to remove specific elements from the left of a given array of elements using JavaScript ?5How to convert a 2D array to a comma-separated values (CSV) string in JavaScript ?6How to count number of occurrences of repeated names in an array of objects in JavaScript ?7How to count number of data types in an array in JavaScript ?8How to remove falsy values from an array in JavaScript ?9How to move specified number of elements to the end of an array in JavaScript ?10How to flatten a given array up to the specified depth in JavaScript ?11How to get the standard deviation of an array of numbers using JavaScript ?12How to get symmetric difference between two arrays in JavaScript ?13How to get n largest elements from array in JavaScript ?14How to find every element that exists in any of two given arrays once using JavaScript ?15How to find all elements in a given array except for the first one using JavaScript ?16How to remove n elements from the end of a given array in JavaScript ?17How to create an object from two arrays in JavaScript?18How to create a string by joining the elements of an array in JavaScript ?19How to splice an array without mutating the original Array?20Swapping two array elements in a single line using JavaScript21How to create HTML list from JavaScript array ?22How to get the same value from another array and assign to object of arrays?23How to truncate an array in JavaScript ?24How to print object by id in an array of objects in JavaScript?25How to convert a number into array in JavaScript ?26How to print unique elements from two unsorted arrays using JavaScript ?27How to transform a JavaScript iterator into an array?28How to add elements to an existing array dynamically in JavaScript ?29How to replace an item from an array in JavaScript?JavaScript DateTime ExamplesHere in the section, we've compiled the most important DateTime JavaScript programming examples. These examples are designed to deepen your understanding of working with date and time in JavaScript.Sr. No.Articles1How to calculate days left until next Christmas using JavaScript ?2How to get tomorrow’s date in a string format in JavaScript ?3How to convert UTC date time into local date time using JavaScript ?4How to check for two timestamp for the same day?5How to get seconds since epoch in JavaScript?6How to compare date part only without comparing time in JavaScript?7How to check the input date is equal to today’s date or not using JavaScript ?8Get the relative timestamp difference between dates in JavaScript9How to check if one date is between two dates in JavaScript ?10How to check if the given date is weekend ?11How to format current date in MM/DD/YYYY HH:MM:SS format using JavaScript ?12How to convert date to another timezone in JavaScript ?13How to check if date is less than 1 hour ago using JavaScript ?14How to check a date is valid or not using JavaScript ?15How to get the day and month of a year using JavaScript ?16How to store all dates in an array present in between given two dates in JavaScript ?17How to convert seconds to time string format hh:mm:ss using JavaScript ?18How do you display JavaScript datetime in 12 hour AM/PM format?19Converting milliseconds to date.20How to calculate the date three months prior using JavaScript ?21How to calculate minutes between two dates in JavaScript ?22How to calculate the yesterday’s date in JavaScript ?23How to get the first day of the year in JavaScript ?24How to get the first and last date of current month using JavaScript ?25How to remove time from date using JavaScript ?26How to get the current date in JavaScript ?27How to get the current date and time in seconds?JavaScript String/Text ExamplesExplore the practice set of String/Text JavaScript examples. All the examples listed below will help you master the art of handling text data efficiently in your JavaScript projects.Sr. No.Articles1How to convert a string into a integer without using parseInt() function in JavaScript ?2How to generate all combinations of a string in JavaScript ?3How to replace line breaks with <br> using JavaScript ?4How to split multiline string into an array of lines in JavaScript ?5How to convert image into base64 string using JavaScript ?6How to check whether a passed string is palindrome or not in JavaScript ?7How to get the number of occurrences of each letter in specified string in JavaScript ?8How to find the longest word within the string in JavaScript ?9How to find unique characters of a string in JavaScript ?10How to create an element from a string in JavaScript?11How to get the first three characters of a string using JavaScript ?12How to check a given string is an anagram of another string in JavaScript ?13How to create half of the string in uppercase and the other half in lowercase?14Convert a number to a string in JavaScript15How to get a number of vowels in a string in JavaScript?16Difference between single-quoted and double-quoted strings in JavaScript17Convert user input string into regular expression using JavaScript18How to add method to String class in JavaScript?19How to convert long number into abbreviated string in JavaScript ?20How to get the longest string in an array using JavaScript ?21How to remove all Non-ASCII characters from the string using JavaScript ?22How to change the Content of a <textarea> using JavaScript ?23How to globally replace a forward slash in a JavaScript string ?24How to insert a string at a specific index in JavaScript ?25How to create hash from string in JavaScript ?26How to pad a string to get the determined length using JavaScript ?27How to get nth occurrence of a string in JavaScript ?28How to remove a character from string in JavaScript ?29How to convert string into float in JavaScript?30How to convert string to camel case in JavaScript ?JavaScript Regular Expression ExamplesBelow we have listed down Regular Expression JavaScript programming examples. Practice these questions and know the use of break, clone, and more.Sr. No.Articles1How to replace line breaks with <br> using JavaScript ?2How to clone a given regular expression in JavaScript ?3How to convert a string into kebab case using JavaScript ?4How to validate URL using regular expression in JavaScript?JavaScript DOM ExamplesIn this DOM dedicated section, we have listed 15 DOM-based JavaScript examples JavaScript. Explore these examples and get to know how to save data in DOM, how to specify class in div, and more.Sr. No.Articles1How to store data in the DOM ?2How to specify the URL that will process the data supplied through input(s) when the form is submitted?3How to store data to DOM ?4How to get elements of specific class inside a div ?5How to check the given element has the specified class in JavaScript ?6How getElementByID works in JavaScript ?7What is shadow root and how to use it ?8What is the use of the “no-js” class in HTML ?9How to Combine multiple elements and append the result into a div using JavaScript ?10How to get the information from a meta tag using JavaScript?11How to check if an element is visible in DOM ?12How to check a JavaScript Object is a DOM Object ?13How to remove an HTML element using JavaScript ?14Replace a DOM element with another DOM element in place15Set the focus to HTML form element using JavaScriptJavaScript JSON ExamplesUnder JSON Examples, we've compiled JavaScript JSON-based programming examples. So if you are looking to refine your skills, dive into the examples listed below for practical learning.Sr. No.Articles1How to read information from nested objects in DataTables ?2How to Convert CSV to JSON file and vice-versa in JavaScript ?3Working with APIs in JavaScript4Difference Between JSON and BSON5Difference Between JSON and AJAX6How to convert JSON results into a date using JavaScript ?7How to swap key and value of JSON element using JavaScript ?8How to send a JSON object to a server using Javascript?9How to Convert JS Object to JSON String in JQuery/Javascript?10How to convert JSON data to a html table using JavaScript/jQuery ?11Deserializing a JSON into a JavaScript object12How to pretty print JSON string in JavaScript ?13Check if a key exists inside a JSON object14How to add an element to a JSON object?15Remove a JSON attribute16Interesting facts about JSON17Difference between JSON and XML18Converting JSON text to JavaScript Object19JSON | modify an array value of a JSON objectJavaScript Mini ProjectsOnce you have tried all the above JavaScript programming examples, then explore this section to find out the mini JavaScript examples. Ihese examples help you to upskale you logical skills.Sr. No.Articles1Design a Text Editor using JavaScript2Generate a Random Birthday Wishes using JavaScript3Design a Digital Clock using JavaScript4Design a Todo List using JavaScript5Create a Mobile Toggle Navigation Menu using JavaScript6Simple Tic-Tac-Toe Game using JavaScript7Design a Simple Calculator using JavaScript8Design a Scientific Calculator using JavaScript9Create an Image Lightbox Gallery using JavaScript10Preview Image on click in Gallery View using JavaScript11Add filter with Portfolio Gallery using JavaScript12Create a Mobile Toggle Navigation Menu using JavaScript13Create a Hoverable Side Navigation using JavaScript Conclusion JavaScript programming examples provide a practical way to understand and apply concepts ranging from basic syntax to advanced features like asynchronous programming, DOM manipulation, and object-oriented design. These examples help in building dynamic, interactive web applications and solving real-world problems efficiently. By practicing these examples, developers can enhance their skills and create scalable, responsive, and feature-rich applications. Learning Data Structures with Javascript Comment More infoAdvertise with us Next Article Introduction to JavaScript K kartik Follow Improve Article Tags : JavaScript Web Technologies JavaScript-Questions Tutorials Web-Tech Tutorials +1 More Similar Reads JavaScript Tutorial JavaScript is a programming language used to create dynamic content for websites. It is a lightweight, cross-platform, and single-threaded programming language. It's an interpreted language that executes code line by line, providing more flexibility.Client Side: On the client side, JavaScript works 8 min read JavaScript BasicsIntroduction to JavaScriptJavaScript is a versatile, dynamically typed programming language that brings life to web pages by making them interactive. It is used for building interactive web applications, supports both client-side and server-side development, and integrates seamlessly with HTML, CSS, and a rich standard libra 4 min read JavaScript VersionsJavaScript is a popular programming language used by developers all over the world. It’s a lightweight and easy-to-learn language that can run on both the client-side (in your browser) and the server-side (on the server). JavaScript was created in 1995 by Brendan Eich.In 1997, JavaScript became a st 2 min read How to Add JavaScript in HTML Document?To add JavaScript in HTML document, several methods can be used. These methods include embedding JavaScript directly within the HTML file or linking an external JavaScript file.Inline JavaScriptYou can write JavaScript code directly inside the HTML element using the onclick, onmouseover, or other ev 3 min read JavaScript SyntaxJavaScript syntax refers to the rules and conventions dictating how code is structured and arranged within the JavaScript programming language. This includes statements, expressions, variables, functions, operators, and control flow constructs.Syntaxconsole.log("Basic Print method in JavaScript");Ja 6 min read JavaScript OutputJavaScript provides different methods to display output, such as console.log(), alert(), document.write(), and manipulating HTML elements directly. Each method has its specific use cases, whether for debugging, user notifications, or dynamically updating web content. Here we will explore various Jav 4 min read JavaScript CommentsComments help explain code (they are not executed and hence do not have any logic implementation). We can also use them to temporarily disable parts of your code.1. Single Line CommentsA single-line comment in JavaScript is denoted by two forward slashes (//), JavaScript// A single line comment cons 2 min read JS Variables & DatatypesVariables and Datatypes in JavaScriptVariables and data types are foundational concepts in programming, serving as the building blocks for storing and manipulating information within a program. In JavaScript, getting a good grasp of these concepts is important for writing code that works well and is easy to understand.Data TypesVariabl 6 min read Global and Local variables in JavaScriptIn JavaScript, understanding the difference between global and local variables is important for writing clean, maintainable, and error-free code. Variables can be declared with different scopes, affecting where and how they can be accessed. Global VariablesGlobal variables in JavaScript are those de 4 min read JavaScript LetThe let keyword is a modern way to declare variables in JavaScript and was introduced in ECMAScript 6 (ES6). Unlike var, let provides block-level scoping. This behaviour helps developers avoid unintended issues caused by variable hoisting and scope leakage that are common with var.Syntaxlet variable 6 min read JavaScript constThe const keyword in JavaScript is a modern way to declare variables, introduced in (ES6). It is used to declare variables whose values need to remain constant throughout the lifetime of the application.const is block-scoped, similar to let, and is useful for ensuring immutability in your code. Unli 5 min read JavaScript Var StatementThe var keyword is used to declare variables in JavaScript. It has been part of the language since its inception. When a variable is declared using var, it is function-scoped or globally-scoped, depending on where it is declared.Syntaxvar variable = value;It declares a variable using var, assigns it 7 min read JS OperatorsJavaScript OperatorsJavaScript operators are symbols or keywords used to perform operations on values and variables. They are the building blocks of JavaScript expressions and can manipulate data in various ways.There are various operators supported by JavaScript:1. JavaScript Arithmetic OperatorsArithmetic Operators p 5 min read Operator precedence in JavaScriptOperator precedence refers to the priority given to operators while parsing a statement that has more than one operator performing operations in it. Operators with higher priorities are resolved first. But as one goes down the list, the priority decreases and hence their resolution. ( * ) and ( / ) 2 min read JavaScript Arithmetic OperatorsJavaScript Arithmetic Operators are the operator that operate upon the numerical values and return a numerical value. Addition (+) OperatorThe addition operator takes two numerical operands and gives their numerical sum. It also concatenates two strings or numbers.JavaScript// Number + Number => 5 min read JavaScript Assignment OperatorsAssignment operators are used to assign values to variables in JavaScript.JavaScript// Lets take some variables x = 10 y = 20 x = y ; console.log(x); console.log(y); Output20 20 More Assignment OperatorsThere are so many assignment operators as shown in the table with the description.OPERATOR NAMESH 5 min read JavaScript Comparison OperatorsJavaScript comparison operators are essential tools for checking conditions and making decisions in your code. 1. Equality Operator (==) The Equality operator is used to compare the equality of two operands. JavaScript// Illustration of (==) operator let x = 5; let y = '5'; // Checking of operands c 5 min read JavaScript Logical OperatorsLogical operators in JavaScript are used to perform logical operations on values and return either true or false. These operators are commonly used in decision-making statements like if or while loops to control the flow of execution based on conditions.In JavaScript, there are basically three types 5 min read JavaScript Bitwise OperatorsIn JavaScript, a number is stored as a 64-bit floating-point number but bitwise operations are performed on a 32-bit binary number. To perform a bit-operation, JavaScript converts the number into a 32-bit binary number (signed) and performs the operation and converts back the result to a 64-bit numb 5 min read JavaScript Ternary OperatorThe Ternary Operator in JavaScript is a conditional operator that evaluates a condition and returns one of two values based on whether the condition is true or false. It simplifies decision-making in code, making it more concise and readable. Syntaxcondition ? trueExpression : falseExpressionConditi 4 min read JavaScript Comma OperatorJavaScript Comma Operator mainly evaluates its operands from left to right sequentially and returns the value of the rightmost operand. JavaScriptlet x = (1, 2, 3); console.log(x); Output3 Here is another example to show that all expressions are actually executed.JavaScriptlet a = 1, b = 2, c = 3; l 2 min read JavaScript Unary OperatorsJavaScript Unary Operators work on a single operand and perform various operations, like incrementing/decrementing, evaluating data type, negation of a value, etc.Unary Plus (+) OperatorThe unary plus (+) converts an operand into a number, if possible. It is commonly used to ensure numerical operati 4 min read JavaScript in and instanceof operatorsJavaScript Relational Operators are used to compare their operands and determine the relationship between them. They return a Boolean value (true or false) based on the comparison result.JavaScript in OperatorThe in-operator in JavaScript checks if a specified property exists in an object or if an e 3 min read JavaScript String OperatorsJavaScript String Operators are used to manipulate and perform operations on strings. There are two operators which are used to modify strings in JavaScript. These operators help us to join one string to another string.1. Concatenate OperatorConcatenate Operator in JavaScript combines strings using 3 min read JS StatementsJavaScript StatementsJavaScript statements are programming instructions that a computer executes. A computer program is essentially a list of these "instructions" designed to perform tasks. In a programming language, such instructions are called statements.Types of Statements1. Variable Declarations (var, let, const)In 4 min read JavaScript if-elseJavaScript conditional statements allow programs to make decisions based on specific conditions. They control the flow of execution, enabling different actions for different scenarios.JavaScript if-statementIt is a conditional statement that determines whether a specific action or block of code will 3 min read JavaScript switch StatementThe switch statement evaluates an expression and executes code based on matching cases. It’s an efficient alternative to multiple if-else statements, improving readability when handling many conditions.Syntaxswitch (expression) { case value1: // Code block 1 break; case value2: // Code block 2 break 4 min read JavaScript Break StatementJavaScript break statement is used to terminate the execution of the loop or the switch statement when the condition is true.In Switch Block (To come out of the block)JavaScriptconst fruit = "Mango"; switch (fruit) { case "Apple": console.log("Apple is healthy."); break; case "Mango": console.log("M 2 min read JavaScript Continue StatementThe continue statement in JavaScript is used to break the iteration of the loop and follow with the next iteration. Example of continue to print only odd Numbers smaller than 10JavaScriptfor (let i = 0; i < 10; i++) { if (i % 2 == 0) continue; console.log(i); }Output1 3 5 7 9 How Does Continue Wo 1 min read JavaScript Return StatementThe return statement in JavaScript is used to end the execution of a function and return a value to the caller. It is used to control function behaviour and optimise code execution.Syntaxreturn [expression]Expression Evaluation: The expression inside the brackets is evaluated and returned to the cal 4 min read JS LoopsJavaScript LoopsLoops in JavaScript are used to reduce repetitive tasks by repeatedly executing a block of code as long as a specified condition is true. This makes code more concise and efficient.Suppose we want to print 'Hello World' five times. Instead of manually writing the print statement repeatedly, we can u 3 min read JavaScript For LoopJavaScript for loop is a control flow statement that allows code to be executed repeatedly based on a condition. It consists of three parts: initialization, condition, and increment/decrement. Syntaxfor (statement 1 ; statement 2 ; statement 3){ code here...}Statement 1: It is the initialization of 4 min read JavaScript While LoopThe while loop executes a block of code as long as a specified condition is true. In JavaScript, this loop evaluates the condition before each iteration and continues running as long as the condition remains true.Syntaxwhile (condition) { Code block to be executed}Here's an example that prints from 3 min read JavaScript For In LoopThe JavaScript for...in loop iterates over the properties of an object. It allows you to access each key or property name of an object.JavaScriptconst car = { make: "Toyota", model: "Corolla", year: 2020 }; for (let key in car) { console.log(`${key}: ${car[key]}`); }Outputmake: Toyota model: Corolla 3 min read JavaScript for...of LoopThe JavaScript for...of loop is a modern, iteration statement introduced in ECMAScript 2015 (ES6). Works for iterable objects such as arrays, strings, maps, sets, and more. It is better choice for traversing items of iterables compared to traditional for and for in loops, especially when we have bre 3 min read JavaScript do...while LoopA do...while loop in JavaScript is a control structure where the code executes repeatedly based on a given boolean condition. It's similar to a repeating if statement. One key difference is that a do...while loop guarantees that the code block will execute at least once, regardless of whether the co 4 min read JS Perfomance & DebuggingJavaScript | PerformanceJavaScript is a fundamental part of nearly every web application and web-based software. JavaScript’s client-side scripting capabilities can make applications more dynamic and interactive, but it also increases the chance of inefficiencies in code. Poorly written JavaScript can degrade user experien 4 min read Debugging in JavaScriptDebugging is the process of testing, finding, and reducing bugs (errors) in computer programs. It involves:Identifying errors (syntax, runtime, or logical errors).Using debugging tools to analyze code execution.Implementing fixes and verifying correctness.Types of Errors in JavaScriptSyntax Errors: 4 min read JavaScript Errors Throw and Try to CatchJavaScript uses throw to create custom errors and try...catch to handle them, preventing the program from crashing. The finally block ensures that code runs after error handling, regardless of success or failure.throw: Creates custom errors and stops code execution.try...catch: Catches and handles e 2 min read JS ObjectObjects in JavascriptAn object in JavaScript is a data structure used to store related data collections. It stores data as key-value pairs, where each key is a unique identifier for the associated value. Objects are dynamic, which means the properties can be added, modified, or deleted at runtime.There are two primary w 4 min read Object Oriented Programming in JavaScriptObject Oriented Programming (OOP) is a style of programming that uses classes and objects to model real-world things like data and behavior. A class is a blueprint that defines the properties and methods an object can have, while an object is a specific instance created from that class. Why OOP is N 3 min read JavaScript ObjectsIn our previous article on Introduction to Object Oriented Programming in JavaScript we have seen all the common OOP terminology and got to know how they do or don't exist in JavaScript. In this article, objects are discussed in detail.Creating Objects:In JavaScript, Objects can be created using two 6 min read Creating objects in JavaScriptAn 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. Properties are defined with key-value pairs, and methods are functions defined within the object, e 5 min read JavaScript JSON ObjectsJSON (JavaScript Object Notation) is a handy way to share data. It's easy for both people and computers to understand. In JavaScript, JSON helps organize data into simple objects. Let's explore how JSON works and why it's so useful for exchanging information.const jsonData = { "key1" : "value1", ... 3 min read JavaScript Object ReferenceJavaScript Objects are the most important data type and form the building blocks for modern JavaScript. The "Object" class represents the JavaScript data types. Objects are quite different from JavaScript’s primitive data types (Number, String, Boolean, null, undefined, and symbol). It is used to st 4 min read JS FunctionFunctions in JavaScriptFunctions in JavaScript are reusable blocks of code designed to perform specific tasks. They allow you to organize, reuse, and modularize code. It can take inputs, perform actions, and return outputs.JavaScriptfunction sum(x, y) { return x + y; } console.log(sum(6, 9)); // output: 15Function Syntax 4 min read How to write a function in JavaScript ?JavaScript functions serve as reusable blocks of code that can be called from anywhere within your application. They eliminate the need to repeat the same code, promoting code reusability and modularity. By breaking down a large program into smaller, manageable functions, programmers can enhance cod 4 min read JavaScript Function CallThe call() method is a predefined JavaScript method. It can be used to invoke (call) a method with an owner object as an argument (parameter). This allows borrowing methods from other objects, executing them within a different context, overriding the default value, and passing arguments. Syntax: cal 2 min read Different ways of writing functions in JavaScriptA JavaScript function is a block of code designed to perform a specific task. Functions are only executed when they are called (or "invoked"). JavaScript provides different ways to define functions, each with its own syntax and use case.Below are the ways of writing functions in JavaScript:Table of 3 min read Difference between Methods and Functions in JavaScriptGrasping the difference between methods and functions in JavaScript is essential for developers at all levels. While both are fundamental to writing effective code, they serve different purposes and are used in various contexts. This article breaks down the key distinctions between methods and funct 3 min read Explain the Different Function States in JavaScriptIn JavaScript, we can create functions in many different ways according to the need for the specific operation. For example, sometimes we need asynchronous functions or synchronous functions.  In this article, we will discuss the difference between the function Person( ) { }, let person = Person ( ) 3 min read JavaScript Function Complete ReferenceA JavaScript function is a set of statements that takes inputs, performs specific computations, and produces outputs. Essentially, a function performs tasks or computations and then returns the result to the user.Syntax:function functionName(Parameter1, Parameter2, ..) { // Function body}Example: Be 3 min read JS ArrayJavaScript ArraysIn JavaScript, an array is an ordered list of values. Each value, known as an element, is assigned a numeric position in the array called its index. The indexing starts at 0, so the first element is at position 0, the second at position 1, and so on. Arrays can hold any type of data—such as numbers, 7 min read JavaScript Array MethodsTo help you perform common tasks efficiently, JavaScript provides a wide variety of array methods. These methods allow you to add, remove, find, and transform array elements with ease.Javascript Arrays Methods1. JavaScript Array length The length property of an array returns the number of elements i 7 min read Best-Known JavaScript Array MethodsAn array is a special variable in all programming languages used to store multiple elements. JavaScript array come with built-in methods that every developer should know how to use. These methods help in adding, removing, iterating, or manipulating data as per requirements.There are some Basic JavaS 6 min read Important Array Methods of JavaScriptJavaScript arrays are powerful tools for managing collections of data. They come with a wide range of built-in methods that allow developers to manipulate, transform, and interact with array elements.Some of the most important array methods in JavaScript areTable of Content1. JavaScript push() Metho 7 min read JavaScript Array ReferenceJavaScript Array is used to store multiple elements in a single variable. It can hold various data types, including numbers, strings, objects, and even other arrays. It is often used when we want to store a list of elements and access them by a single variable.Syntax:const arr = ["Item1", "Item2", " 4 min read Like