Question

在Angular 7应用程序中，我具有以下内容：

var name_key = "name";
var language_key = "language";
var type_key = "type"

然后，API返回以下JSON：

{
  "errors": {
    "language": [
      "language not found"
    ],
    "name": [
      "name not found",
      "name must not exceed 200 characters"
    ]
  }
}

我需要获取每个key的错误消息，这样就可以了：

"name" > "name not found",
         "name must not exceed 200 characters"

"language" > "language not found"

"type" > NULL

我该怎么做？

Answer 1

看起来就是您所需要的，类似数组的语法允许您使用变量键访问对象字段：

const apiResponse = getApiData(); //your API response
const errorKeys = [name_key, language_key, type_key];
let errors = [];
for (let errKey of errorKeys) {
  errors.push(apiResponse.errors[errKey]);
}

P.S .：您通常不会在打字稿中使用var关键字，因为它会弄乱范围。使用let或const代替here's why

通过键获取字符串数组

1 个答案: