对于多个数组，ES6以不同的方式运行函数

const arr1 = [1, 2, 3];
const arr2 = [4, 5, 6];
const mergedArray = [...arr1, ...arr2];
console.log(mergedArray); // [1, 2, 3, 4, 5, 6]

const numbers = [1, 2, 3, 4, 5];
const filteredArray = numbers.filter(num => num % 2 === 0);
console.log(filteredArray); // [2, 4]

const numbers = [1, 2, 3];
const mappedArray = numbers.map(num => num * 2);
console.log(mappedArray); // [2, 4, 6]

const numbers = [3, 1, 2];
numbers.sort();
console.log(numbers); // [1, 2, 3]

const numbers = [1, 2, 3, 4, 5];
const foundNumber = numbers.find(num => num > 3);
console.log(foundNumber); // 4

const numbers = [1, 2, 3, 4, 5];
const sum = numbers.reduce((acc, num) => acc + num, 0);
console.log(sum); // 15