JavaScript

Basics of JavaScript PDF Guide for Beginners with Code Examples

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Basics of JavaScript Code JavaScript is a high-level, dynamic, and interpreted programming language. It is used to add interactivity and other dynamic elements to websites. The console in JavaScript  The console in JavaScript is a tool used for debugging and testing purposes. It allows developers to log information to the browser console for viewing. This … Read more

JavaScript Async Code Examples

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JavaScript Async Code Examples JavaScript is a single-threaded language, which means that it can only execute one piece of code at a time. This can make it challenging to perform long-running tasks, such as network requests, without freezing up the UI. To solve this issue, JavaScript provides the concept of asynchronous programming, which allows you … Read more

JavaScript Best Practices 2023 with Example Code

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10 best practices for writing efficient and maintainable JavaScript code: Use const instead of var or let whenever possible. This helps prevent accidental modification of variables. Example: const name = “John”; name = “Jane”; // Error: “name” is read-only Declare variables as close as possible to their first use. This reduces their scope and makes … Read more

Beginners Introduction Guide To JavaScript Code

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Beginners Introduction Guide To JavaScript Code JavaScript is a high-level, dynamic, and interpreted programming language. It is used to add interactivity and other dynamic elements to websites. Here are some basics of JavaScript with code examples: Variables:  variables are used to store values in JavaScript. You can declare a variable with the “let” keyword, like … Read more

Coding Examples PDF Guide Questions and Answers

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Downloadable PDF included JavaScript interview questions with answers: What is closure in JavaScript and how does it work? Answer: Closure is a feature in JavaScript where a function has access to its outer scope even after the outer function has returned. It is created when a function is defined inside another function, and the inner … Read more

JavaScript interview questions with code examples

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JavaScript interview questions with code examples: What is hoisting in JavaScript and how does it work? console.log(hoistedVariable); // undefined var hoistedVariable = ‘This is a hoisted variable’; console.log(notHoisted); // ReferenceError: notHoisted is not defined let notHoisted = ‘This is not a hoisted variable’; What is closure in JavaScript and how is it useful? function outerFunction(x) … Read more

JavaScript interview questions with Examples of Code and Code Snippets 2023

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JavaScript interview questions with answers: What is closure in JavaScript and how does it work? Answer: Closure is a feature in JavaScript where a function has access to its outer scope even after the outer function has returned. It is created when a function is defined inside another function, and the inner function retains access … Read more

JSON parse and JSON stringify with JavaScript Code

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JSON.stringify JSON.stringify is a method in JavaScript used to convert a JavaScript object into a JSON string. JSON stands for JavaScript Object Notation and is a lightweight data interchange format used for exchanging data between systems. Here are some examples of using JSON.stringify: Converting a JavaScript object to a JSON string: const person = { … Read more

JavaScript Template Literal

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A template literal in JavaScript is a type of string literal that allows for embedded expressions, represented by expressions inside ${}. They are indicated by using backticks (“) instead of quotes (” or ‘). Example: const name = “John”; const sentence = `Hello, my name is ${name}.`; console.log(sentence); // Output: “Hello, my name is John.” … Read more