JavaScript Exercise

Question 1: Print numbers from 1 to 10 using the ++ operator.

javascript

let num = 0;
while(num <= 10) {
  console.log(++num);
}

Question 2: Print numbers from 10 to 1 using the -- operator.

javascript

let num = 10;
while(num >= 1) {
  console.log(num--);
}

Question 3: Create 5 variables for your bank account details using let, const, and var.

javascript

//Account Details of my account
const accountNumber = 546565;
let ifscCode = "KOTAK565612";
var accoutHolderName = "Simply JavaScript";
let balance = 87000;
let bankAddress = "Queens Road, Delhi";

Question 4: Write a code snippet and explain it using a multi-line comment.

javascript

/*
  Below code is used to print numbers from 1 to 10
*/
console.log(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);

Question 5: Explain the difference between a Process and a Thread.

A process represents a running instance of a program, while a thread is an individual execution unit within that process. Threads share the same memory space within a process and can communicate directly, whereas processes have separate memory spaces and need inter-process communication mechanisms to communicate. In essence, processes encapsulate programs in execution, while threads represent independent execution sequences within those processes.

Question 6: Write differences between let, const and var.

Read here

Question 7: Guess output.

javascript

console.log(1 + 1);
console.log(1 + 200);
console.log(200 + "300");
console.log("learnjavascript" + 400);

Question 8: In your own words, explain what JavaScript is in detail.

JavaScript is a programming language that is primarily used to create interactive and dynamic web pages. It is a client-side scripting language, which means that it runs directly in the web browser, rather than on a server. JavaScript allows developers to create a wide range of interactive elements on web pages, such as form validation, image sliders, and interactive maps. It can also be used to create browser-based games and desktop applications using technologies such as Electron and Node.js. JavaScript code is usually written in a text editor and then embedded in an HTML or PHP file, which is then run in a web browser. JavaScript is also often used in combination with other technologies such as HTML, CSS, and web frameworks such as Angular, React, and Vue.js.

Question 9: Guess output.

javascript

console.log(2 \*\* 4);
console.log(14 % 10);
console.log(5 != "5");
console.log(5 !== "5");
console.log(10 <= 5);
console.log(10 >= 10);