javascript检查数组是否在一行中包含多个元素

const arr = [1, 2, 3];
const isMultipleElements = Array.isArray(arr) && arr.length > 1;
console.log(isMultipleElements); // true

const arr = [1, 2, 3];
const isMultipleElements = arr.length > 1;
console.log(isMultipleElements); // true

function hasMultipleElements(arr) {
  return Array.isArray(arr) && arr.length > 1;
}

const arr1 = [1, 2, 3];
console.log(hasMultipleElements(arr1)); // true

const arr2 = [1];
console.log(hasMultipleElements(arr2)); // false