js switch 范围

let value = 25;

if (value >= 20 && value <= 30) {
  console.log('Value is between 20 and 30');
} else if (value > 30 && value <= 40) {
  console.log('Value is between 31 and 40');
} else {
  console.log('Value is outside the ranges specified');
}

let value = 25;
let rangeStart = 20;
let rangeEnd = 30;

switch (true) {
  case (value >= rangeStart && value <= rangeEnd):
    console.log('Value is between 20 and 30');
    break;
  case (value > rangeEnd && value <= rangeEnd + 10):
    console.log('Value is between 31 and 40');
    break;
  default:
    console.log('Value is outside the ranges specified');
}

let value = 25;
let ranges = [
  { min: 20, max: 30, action: () => console.log('Value is between 20 and 30') },
  { min: 31, max: 40, action: () => console.log('Value is between 31 and 40') }
];

let matched = false;
for (let range of ranges) {
  if (value >= range.min && value <= range.max) {
    range.action();
    matched = true;
    break;
  }
}

if (!matched) {
  console.log('Value is outside the ranges specified');
}