Split Array - JS

Question

我实际上已经通过了这个测试，但我对一件事并不满意。

如果我通过以下内容：

var expected = [-5, '0', 5];
var actual = [-5, 0, 5];

我会得到这个结果：

FAILED [check mixed elements] Expected "-5,0,5", but got "-5,0,5"

正如您所看到的，它显示了两个完全相同的东西，其中必须是：

FAILED [check mixed elements] Expected "-5,'0',5", but got "-5,0,5"

如果我在assertArraysEqual函数的FAILED选项上使用了arrayToString函数，它将如下所示：

FAILED [check mixed elements] Expected "-,5,',0,',5", but got "-,5,0,5"

知道如何解决这个问题吗？

这是我的完整代码的副本：

function arrayToString(array) {
  var convertedArrayToString = '';

  if(array[0] === "-"){
   array.splice(0, 2, (array[0] + array[1]));
  }

  for (var i = 0; i < array.length; i++) {
    if(typeof array[i] === 'number'){
       convertedArrayToString += Number(array[i]);
    }else if(typeof array[i] === 'string'){
      convertedArrayToString += `'${array[i]}'`;
    } else {
      convertedArrayToString += array[i];
    }
  }
  return convertedArrayToString.split('').join(',');
}


function assertArraysEqual(actual, expected, testName) {
  if (arrayToString(actual) === arrayToString(expected)) {
    return console.log('passed');
  } else {
    return console.log(`FAILED [${testName}] Expected "${arrayToString(expected)}", but got "${arrayToString(actual)}"`);
  }
}

var expected = [-5, '0', 5];
var actual = [-5, 0, 5];
assertArraysEqual(actual, expected, 'check mixed elements');

var expected = [1, 2, 3, 4];
var actual = [1, 2, 4];
assertArraysEqual(actual, expected, 'check length');

var expected = ['b', 'r', 'o', 'k', 'e', 'n'];
var actual = 'broken'.split('');
assertArraysEqual(actual, expected, 'splits string into array of characters');

Answer 1

您应该使用JSON.stringify()：

return console.log(`FAILED [${testName}] Expected ${JSON.stringify(expected)}, but got ${JSON.stringify(actual)}`);

应该给你：

FAILED [check mixed elements] Expected [-5,"0",5], but got [-5,0,5]

Answer 2

您可以为每个元素使用JSON.stringify来构建字符串。

function arrayToString(array) {
    return JSON.stringify(array);
}

console.log(arrayToString([5, '0', 5]));