js-math-min-max.js

var MIN_VALUE = 1;
var MAX_VALUE = 5;

/**
 * boundedValue(val)
 *
 * Returns val if val between MIN_VALUE and MAX_VALUE both inclusive
 *
 * Otherwise, returns MIN_VALUE if val is less than MIN_VALUE
 *
 * Else, returns MAX_VALUE if val is greater than MAX_VALUE
 */

function boundedValue(val) {
  return Math.max(MIN_VALUE, Math.min(MAX_VALUE, val));
}