如何从 auth0 JSON 响应中获取特定值

Question

我正在向 auth0 发出请求以使用以下代码获取我的 access_token

var request = require("request");

var options = { method: 'POST',
  url: 'https://auth0.com/oauth/token',
  headers: { 'content-type': 'application/json' },
  body: '{"client_id":"xxx","client_secret":"xxxx","audience":"https://auth0.com/api/v2/","grant_type":"client_credentials"}' };

request(options, function (error, response, body) {
  if (error) throw new Error(error);

  console.log(body);
});

我收到以下回复

{"access_token":"xxxxxxxxxxxx","scope":"xxxxxxx","expires_in":86400,"token_type":"Bearer"}

我只想获取 access_token 值，我尝试了 body.access_token 仍然没有用任何人都可以帮助我