[开发工具]JS算法题：输入[iehttpradio9webvideo]，输出最长的单词不含数字， 即输出video

?面试遇到的，当时没想到用正则表达式这么好写，下次加油吧

  <script>
    function longestStr(arr) {
      var reg = /\d/;
      var longStr = ''
      for (let i = 0; i < arr.length; i++) {
        // 通过正则test方法可找到含数字的单词
        if (reg.test(arr[i]) == true) {
          arr.splice(i, 1)
        } else if (arr[i].length > longStr.length) {
          longStr = arr[i]
        }
      }
      return longStr
    }

    var arr = ['ie', 'http', 'radio9', 'web', 'video']
    ary = longestStr(arr)
    console.log(ary)
  </script>