替换多维数组中的字符串

function replaceStringInMultiDimensionalArray(arr, target, replacement) {
  for (let i = 0; i < arr.length; i++) {
    if (Array.isArray(arr[i])) {
      replaceStringInMultiDimensionalArray(arr[i], target, replacement); // 递归处理数组元素
    } else if (typeof arr[i] === 'string') {
      arr[i] = arr[i].replace(target, replacement); // 替换字符串
    }
  }
}

// 示例用法
const multiDimensionalArray = [
  'Hello',
  ['World', 'Hello'],
  [['Hello', 'World'], 'Hello']
];

replaceStringInMultiDimensionalArray(multiDimensionalArray, 'Hello', 'Hi');
console.log(multiDimensionalArray);