数组连接功能不起作用 [英] array join function not working

问题描述

由于某种原因，我无法看到为什么我的数组连接方法不起作用.这是进行审核的快速代码:

for some reason Im not able to see why my array join method wont work. here's the quick code for review:

function rot13(str) { // LBH QVQ VG!
  var strAry = str.split('');

  var transformed = strAry.map(function(val){

    if(val === " ") return " ";
    else{
      var code = val.charCodeAt(0);
      return  String.fromCharCode(code-13);
    }
  });
  transformed.join('');
 console.log(transformed);
  return transformed;
}

// Change the inputs below to test
rot13("SERR PBQR PNZC");

这个想法是传递字符串，它将被转换为可读的代码字符串，但是联接不起作用.另外，一些数字不能正确转换，不确定为什么要为那个数字加分.

The idea is to pass in the string and it will be converted to a readable code string, but the join is not working. Also, a few of the digits are not converting properly not sure why, bonus points for that one.

推荐答案

您不保存.join()

transformed = transformed.join('');

或

return transformed.join('');

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