In this JavaScript code, we are going to check whether a given number is perfect number or not.
If you're trying to validate user input, for example, figuring out how to determine the type of a number in JavaScript is a problem you may come across. In thi...
// program to check if the number is even or odd// take input from the userconstnumber = prompt("Enter a number: ");//check if the number is evenif(number %2==0) {console.log("The number is even."); }// if the number is oddelse{console.log("The number is odd."); } Ru...
Here, we are going to learn how to check whether a given number is palindrome or not in JavaScript.
Check if a number is in ranges values contained in an array of objects Ask Question Asked 2 years ago Modified 2 years ago Viewed 259 times 2 i have an array with couple of values like : let myvar = 17 let myarray = [ { start: 1, end: 10 }, { start: 15, end:...
const value = 2 isNaN(value) //false isNaN('test') //true isNaN({}) //true isNaN(1.2) //falseIf isNaN() returns false, the value is a number.Another way is to use the typeof operator. It returns the 'number' string if you use it on a number value:typeof 1 //'number'...
The isPrime variable remains true if the number is a prime number. Also Read: JavaScript Program to Print All Prime Numbers in an Interval Before we wrap up, let’s put your knowledge of JavaScript Program to Check Prime Number to the test! Can you solve the following challenge? Challenge:...
JavaScript has 9 types in total: undefined boolean number string bigint symbol object null (typeof() shows as object) function (a special type of object) To verify if a variable is a number, we simply we need to check if the value returned by typeof() is "number". Let's try it ...
I am stuck here as to how to check if each of these parameters contains the number after the equals sign. the end result is if each of these fields has a value or not create my logic constencodeResponseUrl = responseCode.slice(responseCode.indexOf('?') +1)constsplit...
Determining the sign of a number is super easy now with ES6's Math.sign! It will indicate whether the number is positive, negative or zero...