- Trending Categories
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Found 10710 Articles for Web Development
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
602 Views
ProblemWe are required to write a JavaScript function that takes in an array that specifies a range.Our function should find and return the sum of all the natural numbers falling in the range including the range numbers.ExampleFollowing is the code − Live Democonst range = [4, 67]; const findSum = ([l, h]) => { let sum = 0; for(let i = l; i
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
507 Views
ProblemThe car registering system of a city N assigns two types of numbers −The Customer ID − a natural number between 0 and 17558423 inclusively, which is assigned to the car buyers in the following order: the first customer receives ID 0, the second customer receives ID 1, the third customer receives ID 2, and so on;Number Plate − assigned to the car and contains the series ( three Latin lowercase letters from a to z) and the serial number (three digits from 0 to 9).Example − aaa001. Each Number Plate is related to the given Customer ID. For example: ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
626 Views
ProblemWe are required to write a JavaScript function that takes in a string and converts it into NATO phonetic alphabet.The 26 code words are as follows: Alfa, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliett, Kilo, Lima, Mike, November, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Uniform, Victor, Whiskey, X-ray, Yankee, Zulu.ExampleFollowing is the code − Live Democonst str = 'this is simple string'; const convertToNato = (str = '') => { let nato = { a: 'Alfa', b: 'Bravo', c: 'Charlie', d: 'Delta', e: ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
423 Views
ProblemWe are required to write a JavaScript function that takes in a number in miles/gallon and return its equivalent km/litre.ExampleFollowing is the code − Live Democonst num = 25; const converter = (mpg) => { let LITRES_PER_GALLON = 4.54609188; let KILOMETERS_PER_MILE = 1.609344; const ratio = KILOMETERS_PER_MILE / LITRES_PER_GALLON; return Math.round(100 * mpg * ratio) / 100; }; console.log(converter(num));OutputFollowing is the console output −8.85
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
223 Views
Triangular NumberTriangular number is the number of points that can fill an equilateral triangle.For instance − 9 is a triangular number which makes an equilateral triangle with each side of 4 units.ProblemWe are required to write a JavaScript function that takes in a number and returns true if its a triangular number, false otherwise.ExampleFollowing is the code − Live Democonst num = 9; const isTriangular = (num = 1) => { let i = 4; if(num === 1){ return true; }; if(num === 3){ return true; }; while(((3 * 1) - 3)
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
278 Views
ProblemWe are required to write a JavaScript function that takes in a number n and converts it to the corresponding string without using the inbuilt functions String() or toString() or using string concatenation.ExampleFollowing is the code − Live Democonst num = 235456; const convertToString = (num) => { let res = ''; while(num){ res = (num % 10) + res; num = Math.floor(num / 10); }; return res; }; console.log(convertToString(num));OutputFollowing is the console output −235456
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
208 Views
Doubleton NumberWe will call a natural number a "doubleton number" if it contains exactly two distinct digits. For example, 23, 35, 100, 12121 are doubleton numbers, and 123 and 9980 are not.ProblemWe are required to write a JavaScript function that takes in a number and return true if it is a doubleton number, false otherwise.ExampleFollowing is the code − Live Democonst num = 121212; const isDoubleTon = (num = 1) => { const str = String(num); const map = {}; for(let i = 0; i < str.length; i++){ const el = str[i]; ... Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
209 Views
ProblemWe are required to write a JavaScript function that takes in a string. Our function should convert every character of the string to the hex value of its ascii code, then the result should be the sum of the numbers in the hex strings ignoring the letters present in hex.ExampleFollowing is the code − Live Democonst str = "Hello, World!"; const toHexAndSum = (str = '') => { return str .split('') .map(c=>c.charCodeAt()) .map(n=>n.toString(16)) .join('') .split('') .filter(c=>'123456789'.includes(c)) .map(d=>parseInt(d)) .reduce((a, b)=>a+b, 0) }; console.log(toHexAndSum(str));OutputFollowing is the console output −91Read More
![AmitDiwan](https://www.tutorialspoint.com/assets/profiles/123055/profile/60_187394-1565938756.jpg)
163 Views
Lucas NumbersLucas numbers are numbers in a sequence defined like this −L(0) = 2 L(1) = 1 L(n) = L(n-1) + L(n-2)ProblemWe are required to write a JavaScript function that takes in a number n and return the nth lucas number.ExampleFollowing is the code − Live Democonst num = 21; const lucas = (num = 1) => { if (num === 0) return 2; if (num === 1) return 1; return lucas(num - 1) + lucas(num - 2); }; console.log(lucas(num));OutputFollowing is the console output −24476