使用不同的数组初始化数组

const arr1 = [1, 2, 3];
const arr2 = arr1;
console.log(arr2); // 输出 [1, 2, 3]

const str = 'hello';
const arr = Array.from(str);
console.log(arr); // 输出 ['h', 'e', 'l', 'l', 'o']

const arr1 = [1, 2];
const arr2 = [3, 4];
const arr3 = [5, 6];
const newArr = arr1.concat(arr2, arr3);
console.log(newArr); // 输出 [1, 2, 3, 4, 5, 6]

const arr1 = [1, 2, 3];
const arr2 = [...arr1];
console.log(arr2); // 输出 [1, 2, 3]

arr1 = [1, 2, 3]
arr2 = arr1
print(arr2)  # 输出 [1, 2, 3]

arr1 = [1, 2, 3]
arr2 = [x * 2 for x in arr1]
print(arr2)  # 输出 [2, 4, 6]

arr1 = [1, 2, 3]
arr2 = arr1[:]
print(arr2)  # 输出 [1, 2, 3]

arr1 = [1, 2, 3]
arr2 = arr1.copy()
print(arr2)  # 输出 [1, 2, 3]