用js设计一个函数可以实现将数组的每个数据都增加30

function increaseArray(arr) { for (let i = 0; i < arr.length; i++) { arr[i] = arr[i] * 1.3; } return arr; }

// Example usage: const myArray = [10, 20, 30]; const increasedArray = increaseArray(myArray); console.log(increasedArray); // Output: [13, 26, 39]