我正在尝试修复Open AI GPT 3 davinci-text-002给我的响应。在控制台中，我得到了以下响应文本：

{  "id": "cmpl-61dshxu43ecbrqir187yilz9mdhsj",  "object": "text_completion",  "created": 1665749707,  "model": "text-davinci-002",  "choices": [{    "text": "?\n\nthere is no simple answer to these questions. each person's individual experiences and perspectives will shape their understanding of who they are and what life is. in general, however, people often think of themselves as unique individuals with specific talents, interests, and goals. they may also think of life as a journey full of challenges and opportunities for growth.",    "index": 0,    "logprobs": null,    "finish_reason": "stop"  }],  "usage": {    "prompt_tokens": 7,    "completion_tokens": 71,    "total_tokens": 78  }}

文本似乎从\n\n开始，到","index"结束。要提取这段文本作为输出，最好的方法是什么？这是我目前的代码：

let open_ai_response;openai_test();async function openai_test() {  var prompt_text = "who am i?"  var prompt_text2 = "what is life"  var url = "https://api.openai.com/v1/engines/text-davinci-002/completions";  var xhr = new XMLHttpRequest();  xhr.open("POST", url);  xhr.setRequestHeader("Content-Type", "application/json");  xhr.setRequestHeader("Authorization", "Bearer sk-00x0x0x0x0x0x0x0x0x0x0x0x0x");  xhr.onreadystatechange = function() {    if (xhr.readyState === 4) {      console.log(xhr.status);      console.log(xhr.responseText);      var open_ai_response = xhr.responseText;      console.log(open_ai_response);      var edit = open_ai_response[0].toUpperCase() + open_ai_response.slice(1).toLowerCase();      console.log(edit)    }  };  var data = `{    "prompt": "${prompt_text + prompt_text2}",    "temperature": 0.7,    "max_tokens": 256,    "top_p": 1,    "frequency_penalty": 0.75,    "presence_penalty": 0  }`;  xhr.send(data);}

回答：

你收到的响应是JSON格式的。你需要在onreadystatechange处理程序中使用JSON.parse(xhr.responseText)来解析它，然后可以通过访问choices[0].text属性来获取文本。

xhr.onreadystatechange = function() {  if (xhr.readyState === 4) {    var response = JSON.parse(xhr.responseText);    let text = response.choices[0].text    console.log(text);      }};

请注意，这仅读取choices数组中第一个元素的text。如果你想处理该数组中的所有内容，可以修改上述逻辑以遍历它们。