javascript - 从 JSON 中获取列名

Question

我有以下示例 JSON，我想获取列的名称，例如 Dribbble、Behance ...

{ 
  status: 200,
  success: true,
  result: 
   [ { Dribbble: 'a',
       Behance: '',
       Blog: 'http://blog.invisionapp.com/reimagine-web-design-process/',
       Youtube: '',
       Vimeo: '' },
     { Dribbble: '',
       Behance: '',
       Blog: 'http://creative.mailchimp.com/paint-drips/?_ga=1.32574201.612462484.1431430487',
       Youtube: '',
       Vimeo: '' } ] 
}

我正在使用 Request 模块，它可以很好地返回 JSON，但我正在努力获取字符串格式的列名。如果我至少能得到数字格式的列，我就能知道它是否是正确的列，但我得到的却是两个 0。

request({
    url: url,
    json: true
}, function (error, response, body) {

    if (!error && response.statusCode === 200) {
        callback(body)
        var json = body.result;

        for (var key in json) {
            if (json.hasOwnProperty(key)) {
                var column = Object.keys(key);
                console.log(column[0]); 
            }
        }

    }
})

Answer 1

var json = { 
  "status": 200,
  "success": true,
  "result": [
    { 
        "Dribbble": 'a',
        "Behance": '',
        "Blog": 'http://blog.invisionapp.com/reimagine-web-design-process/',
        "Youtube": '',
        "Vimeo": '' 
    },
    { 
       "Dribbble": '',
       "Behance": '',
       "Blog": 'http://creative.mailchimp.com/paint-drips/?_ga=1.32574201.612462484.1431430487',
       "Youtube": '',
       "Vimeo": '' } 
  ] 
}
// get the results (useful data) somewhere
var results = json["result"];
// get the first result set, or you can loop trhrough all, assuming that each reuslt set is the same. 
if (results.length > 0){ 
  var columnsIn = results[0]; 
  for(var key in columnsIn){
    console.log(key); // here is your column name you are looking for
  } 
}else{
    console.log("No columns");
}

此代码片段应为您指明正确的方向