多行字符串转二维数组

Question

const str = ` 1 21    3
4 5  6
7   8 9 `;

function multipleStrToArr(str) {
  const lines = str.split("\n");
  const result = [];

  for (const line of lines) {
    result.push(...line.split(" ").filter((item) => item !== ""));
  }

  return result;
}

console.log(multipleStrToArr(str));

注意 split 空格时，多个空格会生成空字符的项