JavaScript: Check whether a given integer is within 20 of 100 or 400

JavaScript Basic: Exercise-19 with Solution

Write a JavaScript program to check whether a given integer is within 20 of 100 or 400.

Sample Solution:

JavaScript Code:

// Define a function named testhundred that takes a parameter x
function testhundred(x) {
  // Return true if the absolute difference between 100 and x is less than or equal to 20,
  // or the absolute difference between 400 and x is less than or equal to 20; otherwise, return false
  return ((Math.abs(100 - x) <= 20) || (Math.abs(400 - x) <= 20));
}

// Log the result of calling the testhundred function with the argument 10 to the console
console.log(testhundred(10));

// Log the result of calling the testhundred function with the argument 90 to the console
console.log(testhundred(90));

// Log the result of calling the testhundred function with the argument 99 to the console
console.log(testhundred(99));

// Log the result of calling the testhundred function with the argument 199 to the console
console.log(testhundred(199));

// Log the result of calling the testhundred function with the argument 200 to the console
console.log(testhundred(200));

Output:

false
true
true
false
false

Live Demo:

See the Pen JavaScript: Number in a range- basic-ex-19 by w3resource (@w3resource) on CodePen.

Flowchart:

ES6 Version:

 // Using ES6 arrow function syntax to define the testhundred function
const testhundred = (x) => ((Math.abs(100 - x) <= 20) || (Math.abs(400 - x) <= 20));

// Log the result of calling the testhundred function with the argument 10 to the console
console.log(testhundred(10));

// Log the result of calling the testhundred function with the argument 90 to the console
console.log(testhundred(90));

// Log the result of calling the testhundred function with the argument 99 to the console
console.log(testhundred(99));

// Log the result of calling the testhundred function with the argument 199 to the console
console.log(testhundred(199));

// Log the result of calling the testhundred function with the argument 200 to the console
console.log(testhundred(200));

Improve this sample solution and post your code through Disqus.

Previous: JavaScript program to check two given numbers and return true if one of the number is 50 or if their sum is 50.
Next: JavaScript program to check from two given integers, if one is positive and one is negative.