javascript - 解析 JSON 字符串响应。已经尝试过 JSON.parse()

Question

我有一个看起来像这样的响应对象 -

{  
location: '{country:Poland,latitude:50.0575,longitude:19.9802}',
ip: '83.26.234.177',
name: 'John Doe'   
}

我正在尝试像这样读取国家/地区名称 -

data.forEach(function(datapoint) {
    dataObject.ip = datapoint.ip;
    var locationObject = datapoint.location; // also tried JSON.parse
    console.log(locationObject); //{country:Poland,latitude:50.0575,longitude:19.9802}
    console.log(locationObject.country); // undefined
    console.log(locationObject.latitude); //undefined
    console.log(locationObject.longitude); //undefined
}

获取未定义。

Answer 1

datapoint.location 是无效的 json。使用String#replace将其转换为有效的 json 字符串，然后解析:

var data = [{
  location: '{country:Poland,latitude:50.0575,longitude:19.9802}',
  ip: '83.26.234.177',
  name: 'John Doe'
}];


data.forEach(function(datapoint) {
  var json = datapoint.location.replace(/([^\d\.{}:,]+)/g, '"$1"'); // wrap the keys and non number values in quotes
  var locationObject = JSON.parse(json);
  console.log(locationObject.country);
  console.log(locationObject.latitude);
  console.log(locationObject.longitude);
});