Top 10 Coding Examples and Tips for JavaScript Code strict mode example Use strict mode to enforce modern JavaScript syntax and catch errors early: ‘use strict’; Use const and let Always declare variables with const or let, rather than var: // Use let let name = ‘John Doe’; // Use const const PI = 3.14; … Read more
JavaScript Common Interview Questions and Solutions Coding Examples Closure 2forEach Array 3JavaScript Map function 3JavaScript Filter 4Check if number is an integer 5Is the string a palindrome 6Reverse a String 6Find the largest number in an array 8Check Object Property 8Common Elements in two Arrays 9 ClosureWhat is closure in JavaScript and give an example … Read more
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 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
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 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
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: 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 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.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
