JavaScript: Clamp a number within the inclusive range specified by the given boundary values a and b

JavaScript fundamental (ES6 Syntax): Exercise-266 with Solution

Clamp Number in Range

Write a JavaScript program to clamp a number within the inclusive range specified by the given boundary values a and b.

• If num falls within the range, return num.
• Otherwise, return the nearest number in the range.

Sample Solution:

JavaScript Code:

// Define a function 'clampNumber' to restrict a number within a specified range
const clampNumber = (num, a, b) =>
  // Use Math.max and Math.min to ensure 'num' is within the range defined by 'a' and 'b'
  Math.max(Math.min(num, Math.max(a, b)), Math.min(a, b));

// Test the function with different number and range combinations
console.log(clampNumber(2, 3, 5));  // Output: 3 (2 is clamped to the lower bound of the range)
console.log(clampNumber(1, -1, -5)); // Output: -1 (1 is clamped to the upper bound of the range)

Output:

3
-1

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-266-1 by w3resource (@w3resource) on CodePen.

Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript program to chunk an array into smaller arrays of a specified size.
Next: Calculate the midpoint between two points.