javascript - 如何在 Javascript 中从 Json 数组导入值

Question

我在 Json 文件中存储了 3 个 twitter Api key

{
  "twitter_api": [
    {
      "consumer_key":        "KEY",
      "consumer_secret":     "KEY",
      "access_token_key":    "KEY",
      "access_token_secret": "KEY"
    },
    {
      "consumer_key":        "KEY",
      "consumer_secret":     "KEY",
      "access_token_key":    "KEY",
      "access_token_secret": "KEY"
    },
    {
      "consumer_key":        "KEY",
      "consumer_secret":     "KEY",
      "access_token_key":    "KEY",
      "access_token_secret": "KEY"
    } 

每次运行 Twitter 应用程序时，我都想随机导入 1 组 api key 。我尝试了这段代码

var credentials = require('../settings.json').twitter_api[Math.floor(Math.random()*twitter_api.length)]; 

但我收到错误

谁知道如何正确地做到这一点

Answer 1

您可能会得到twitter_api is not Defined，因为它未在twitter_api.length处定义。

以下内容会有所帮助

var twitter_api= require('../settings.json').twitter_api;

var credentials = twitter_api[Math.floor(Math.random()*twitter_api.length)];