javascript错误[jsonFlickrApi未定义]

我调用一个FLickrAPI，它返回一个如下所示的

xmlhttp.responseText

：

jsonFlickrApi({"photos":{"page":1, "pages":200, "perpage":100, "total":"19934",
 "photo":[{"id":"7315581986", "owner":"62691288@N00", "secret":"504915125a", 
"server":"7090", "farm":8, "title":"China, Tiananmen Square", "ispublic":1,
 "isfriend":0, "isfamily":0}, {"id":"7308693706",
...

var jsonResponse = xmlhttp.responseText ;
jsonResponse = eval("("+jsonResponse + ")");
var output += jsonResponse.photos.photo[1].id ;
alert(output);

我试着这样解析它：

jsonFlickrApi({"photos":{"page":1, "pages":200, "perpage":100, "total":"19934",
 "photo":[{"id":"7315581986", "owner":"62691288@N00", "secret":"504915125a", 
"server":"7090", "farm":8, "title":"China, Tiananmen Square", "ispublic":1,
 "isfriend":0, "isfamily":0}, {"id":"7308693706",
...

var jsonResponse = xmlhttp.responseText ;
jsonResponse = eval("("+jsonResponse + ")");
var output += jsonResponse.photos.photo[1].id ;
alert(output);

Firebug告诉我：

jsonFlickrApi未定义

• 为什么我会收到此错误消息

• 为什么我必须首先使用“eval”

看起来您得到的是对请求的-响应，而不是JSON响应。是一个JSON对象，包装在函数调用中。因此，只需定义函数

jsonFlickrApi

，当响应可用时就会调用该函数：

function jsonFlickrApi (response) {
  console.log(
     "Got response from Flickr-API with the following photos: %o", 
     response.photos
  );
  // Handle the response here. I.E update the DOM, trigger event handlers etc.
}

// Later in your XMLHttpRequest code:
var jsonResponse = xmlhttp.responseText ;
// This will call the jsonFlickrApi-function.
eval("("+jsonResponse + ")");

看起来您得到的是对请求的响应，而不是JSON响应。是一个JSON对象，包装在函数调用中。因此，只需定义函数

jsonFlickrApi

，当响应可用时就会调用该函数：

function jsonFlickrApi (response) {
  console.log(
     "Got response from Flickr-API with the following photos: %o", 
     response.photos
  );
  // Handle the response here. I.E update the DOM, trigger event handlers etc.
}

// Later in your XMLHttpRequest code:
var jsonResponse = xmlhttp.responseText ;
// This will call the jsonFlickrApi-function.
eval("("+jsonResponse + ")");

---

是否正确导入了包含jsonFlickrApi（）函数的.js文件？请发布这些代码和其他任何可以让我们更完整了解的代码。您是否正确导入了包含jsonFlickrApi（）函数的.js文件？请张贴该代码和任何其他将给我们一个更完整的图片。