JavaScript Interview Questions and Examples 3 What is the difference between null and undefined in JavaScript? 1 What are closures in JavaScript? 2 How can you check if a variable is an array in JavaScript? 2 Null and undefined are both primitive data types in JavaScript. However, null is an intentional absence of any object … Read more
JavaScript Interview Questions and Examples 2 What is closure in JavaScript? Give an example. 1 What is the difference between var, let, and const in JavaScript? 2 What is closure in JavaScript? Give an example. A closure is a function that has access to its outer function’s scope, even after the outer function has returned. … Read more
JavaScript Interview Questions and Examples 1 What is the difference between null and undefined in JavaScript? 1 What are the different data types in JavaScript? 2 What is a closure in JavaScript? 2 What is the difference between null and undefined in JavaScript? null represents the intentional absence of any object value, while undefined represents … Read more
FrontEnd Code Examples and Questions What is the difference between HTML and XHTML, and how do you serve them? HTML and XHTML are both markup languages used to create web pages. HTML is more forgiving than XHTML in terms of syntax, whereas XHTML has a more strict syntax. HTML documents are served with the text/html … Read more
JavaScript Code Examples What is the difference between let, var, and const in JavaScript? How would you declare and use an arrow function in JavaScript? What is the difference between == and === in JavaScript? How would you reverse a string in JavaScript? What is a closure in JavaScript? What is the this keyword in … 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
Test Questions Based on course at https://www.udemy.com/course/nodejs-mongodb-express Final Project in Section #6 Creating a fully functional node application, that uses Express to run a web application. Connect to a MongoDB and using Node allow the frontend web application to access the Database items, full CRUD interaction. Create a web application using Express – output html file from … Read more
