Question

我在解析来自api.world.weather.com的json请求时遇到问题，下面是我正在使用的代码。当我在控制台上查看JSON时，看起来我正在调用正确的数据，但我得到了错误。例如：ReferenceError：未定义天气

    <!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Temp</title>
  <style>
    html {margin:2em; font-size:2em; font-family:Helvetica, Arial, sans-serif;}
    h1 {margin:0 0 0.2em; color:#369;}
    img {float:left; margin-right:1em;}
    ul {float:left; margin:0; padding:0; list-style:none;}
  </style>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
</head>
<body>
  <section>
    <h1>Current Weather for </h1>
    <div class="img" id="data-img"></div>
    <ul>
      <li><b>Conditions:</b> <span id="data-current"></span></li>
      <li><b>Temperature:</b> <span id="data-temp"></span>&deg;</li>
      <li><b>Humidity:</b> <span id="data-humidity"></span>%</li>
      <li><b>Wind Speed:</b> <span id="data-wind"></span>mph</li>
      <li id="zip"></li>
      <li id="country"></li>
      <li id="api"></li>
    </ul>
  </section>
  <script>
        var zipcode = '27560';
        var appid = 'XXXXXXXXXXXXXXXXXXXXXX';
        var startdate = '2015-10-01';
        var enddate = '2015-10-28';

        $.getJSON('http://api.worldweatheronline.com/premium/v1/past-weather.ashx?q='+ zipcode +'&format=json&date='+ startdate +'&enddate='+ enddate +'&key='+ appid, function(data){ 
            console.log(data);
            $("#data-current").text(data.weather[0].date);
            $("#data-temp").text(data.hourly[0].tempF);
            $("#data-humidity").text(data.hourly[0].humidity);
            $("#data-wind").text(data.hourly[0].windspeedMiles);
        })
        .fail(function(jqxhr, textStatus, error) {
        console.log("Request Failed" + textStatus + "," + error);
        }); 
  </script>
</body>
</html>

Answer 1

从此JSON流返回的JSON具有以下结构：

{
    data: {
        request: [],
        weather: [
            hourly: []
        ],
    }
}

这意味着您从getJSON调用返回的对象上有一个数据属性，但您尝试访问weather属性只有data属性$("#data-current").text(data.data.weather[0].date); $("#data-temp").text(data.data.weather[0].hourly[0].tempF); $("#data-humidity").text(data.data.weather[0].hourly[0].humidity); $("#data-wind").text(data.data.weather[0].hourly[0].windspeedMiles);属性1}}。

您必须将代码更改为：

{{1}}

Answer 2

 <!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Temp</title>
  <style>
    html {margin:2em; font-size:2em; font-family:Helvetica, Arial, sans-serif;}
    h1 {margin:0 0 0.2em; color:#369;}
    img {float:left; margin-right:1em;}
    ul {float:left; margin:0; padding:0; list-style:none;}
  </style>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
</head>
<body>
  <section>
    <h1>Current Weather for </h1>
    <div class="img" id="data-img"></div>
    <ul>
      <li><b>Conditions:</b> <span id="data-current"></span></li>
      <li><b>Temperature:</b> <span id="data-temp"></span>&deg;</li>
      <li><b>Humidity:</b> <span id="data-humidity"></span>%</li>
      <li><b>Wind Speed:</b> <span id="data-wind"></span>mph</li>
      <li id="zip"></li>
      <li id="country"></li>
      <li id="api"></li>
    </ul>
  </section>
  <script>
        var zipcode = '27560';
        var appid = '96afa96cadeb7165258ae95b77fdc';
        var startdate = '2015-10-01';
        var enddate = '2015-10-28';

        $.getJSON('http://api.worldweatheronline.com/premium/v1/past-weather.ashx?q='+ zipcode +'&format=json&date='+ startdate +'&enddate='+ enddate +'&key='+ appid, function(data){ 
            var data = data.data;
            $("#data-current").text(data.weather[0].date);
            $("#data-temp").text(data.hourly[0].tempF);
            $("#data-humidity").text(data.hourly[0].humidity);
            $("#data-wind").text(data.hourly[0].windspeedMiles);
        })
        .fail(function(jqxhr, textStatus, error) {
        console.log("Request Failed" + textStatus + "," + error);
        }); 
  </script>
</body>
</html>

Answer 3

您的数据是data.data;并且您没有正确读取索引。将脚本更改为：

<script>
        var zipcode = '27560';
        var appid = '96afa96cadeb7165258ae95b77fdc';
        var startdate = '2015-10-01';
        var enddate = '2015-10-28';

        $.getJSON('http://api.worldweatheronline.com/premium/v1/past-weather.ashx?q='+ zipcode +'&format=json&date='+ startdate +'&enddate='+ enddate +'&key='+ appid, function(data){ 

            var newdata=data.data;
            console.log(newdata);
            $("#data-current").text(newdata.weather[0].date);
            $("#data-temp").text(newdata.weather[0].hourly[0].tempF);
            $("#data-humidity").text(newdata.weather[0].hourly[0].humidity);
            $("#data-wind").text(newdata.weather[0].hourly[0].windspeedMiles);
        })
        .fail(function(jqxhr, textStatus, error) {
        console.log("Request Failed" + textStatus + "," + error);
        }); 
  </script>

解析json流时遇到问题

3 个答案: