Javascript
/ˈdʒɑːvəˌskrɪpt/
History of JavaScript: A Language for Web Interactivity
Purpose of JavaScript: Enhancing Web Interactivity
Applications of JavaScript: Front-End Web Development and Beyond
JavaScript is the backbone of front-end web development, breathing life into static webpages and turning them into engaging user interfaces. With the Document Object Model (DOM) manipulation, JS can modify HTML and CSS, creating dynamic content, interactive forms, and animations that respond to user actions.
Moreover, JavaScript has expanded its applications beyond the browser. With Node.js, a server-side JavaScript runtime, developers can use JS to build server-side applications, APIs, and real-time web applications. Node.js leverages JS's event-driven, non-blocking architecture, making it a popular choice for scalable and high-performance server-side programming.
JavaScript is also used in hybrid mobile app development frameworks like React Native and Ionic, enabling developers to build cross-platform mobile applications using familiar web development skills.
Furthermore, JS has become a cornerstone in the development of web-based games and interactive data visualizations. Popular libraries and frameworks like React, Angular, and Vue.js provide robust tools for building complex web applications with ease.
In conclusion, JavaScript empowers web developers to create dynamic and interactive web experiences, transforming static webpages into feature-rich user interfaces. Its history as a language for web interactivity and its primary purpose in front-end web development highlight its significance in modern web development practices. With diverse applications in front-end and server-side development, as well as mobile app development, JavaScript remains a crucial and ubiquitous language in the digital landscape.
Javascript: Simple Interest Calculator
import java.util.Scanner;
public class SimpleInterestCalculator {
public static void main(String[] args) {
// Create a Scanner object to read input from the user
Scanner scanner = new Scanner(System.in);
// Prompt the user to enter the principal amount
System.out.print("Enter the principal amount: ");
double principal = scanner.nextDouble();
// Prompt the user to enter the rate of interest
System.out.print("Enter the rate of interest (%): ");
double rateOfInterest = scanner.nextDouble();
// Prompt the user to enter the time period in years
System.out.print("Enter the time period (in years): ");
double timePeriod = scanner.nextDouble();
// Calculate the simple interest
double simpleInterest = (principal * rateOfInterest * timePeriod) / 100;
// Display the result
System.out.println("Simple Interest: " + simpleInterest);
// Close the Scanner to free resources
scanner.close();
}
}
- The program starts by importing the
Scanner
class from thejava.util
package to read user input. - We define a class named
SimpleInterestCalculator
and itsmain
method, which serves as the entry point of the program. - Inside the
main
method, we create aScanner
object namedscanner
to read user input. - The program prompts the user to enter the principal amount, rate of interest, and time period in years using
System.out.print
. - We use
scanner.nextDouble()
to read the user's input as double values and store them in the variablesprincipal
,rateOfInterest
, andtimePeriod
. - The simple interest is calculated using the formula mentioned in the summary, and the result is stored in the variable
simpleInterest
. - The program displays the calculated simple interest using
System.out.println
. - Finally, we close the
Scanner
object usingscanner.close()
to release system resources.
When you run this Java program, it will prompt you to enter the principal amount, rate of interest, and time period. After you provide the input, it will calculate and display the simple interest based on the provided values.