求数组的深度

function getArrayDepth(arr) {
  const depths = []
  arr.forEach( ele => {
    let depth = 0
    if (Array.isArray(ele)) {
      depth = getArrayDepth(ele)
    }
    depths.push(depth)
  })
  return 1 + max(depths)
}

function max(arr) {
  return arr.reduce( (accu, curr) => {
    if (curr > accu) return curr
    return accu
  })
}

 

来源：CSDN

作者：dreamjay1997

链接：https://blog.csdn.net/dreamjay1997/article/details/104253222