2014-01-26 25 views
0

我正在訪問OpenWeather數據使用他們的API,並沒有成功地得到它的工作。我認爲我錯誤地訪問了JSON,但沒有破解它。OpenWeather JSONP

我使用下面的代碼JSFiddle here)查詢自己的數據:

function getWeather(lat, lon, callback) { 
    var weather = 'http://api.openweathermap.org/data/2.5/weather?lat=' + lat + '&lon=' + lon + '&cnt=1'; 
    $.ajax({ 
     dataType: "jsonp", 
     url: weather, 
     success: callback 
    }); 
}; 

我跑回到本查詢

{ 
"coord": 
    { 
    "lon":-6.27,"lat":13.34 
    }, 
"sys": 
    { 
    "message":0.0088, 
    "country":"ML", 
    "sunrise":1390719134, 
    "sunset":1390760592 
    }, 
"weather": 
[ 
    { 
    "id":800,"main":"Clear", 
    "description":"Sky is Clear", 
    "icon":"01n" 
    } 
], 
"base":"cmc stations", 
"main": 
    {"temp":293.154, 
    "temp_min":293.154, 
    "temp_max":293.154, 
    "pressure":989.21, 
    "sea_level":1024.43, 
    "grnd_level":989.21, 
    "humidity":64 
    }, 
"wind": 
    { 
    "speed":4.1, 
    "deg":52.0018 
    }, 
"clouds": 
    { 
    "all":0 
    }, 
"dt":1390695239, 
"id":2451478, 
"name":"Segou", 
"cod":200 
} 

我再試圖格式化這樣的迴應:

var lat = 13.3428; 
var lon = -6.26612; 

    getWeather(lat, lon, function (data) { 
     var tempHTML = ""; 
     tempHTML = tempHTML + '<h3>WEATHER INFO:</h3>'; 
     tempHTML = tempHTML + 'Weather data received <br/>'; 

     tempHTML = tempHTML + '<h3>WEATHER:</h3>'; 
     tempHTML = tempHTML + 'Weather Id: ' + data.weather[0].id + '<br/>'; 
     tempHTML = tempHTML + 'Weather Main: ' + data.weather[0].main + '<br/>'; 
     tempHTML = tempHTML + 'Weather Description: ' + data.weather[0].description + '<br/>'; 
     tempHTML = tempHTML + 'Weather Icon: ' + data.weather[0].icon + '<br/>'; 

     tempHTML = tempHTML + '<h3>MAIN:</h3>'; 
     tempHTML = tempHTML + 'Temperature: ' + data.main[0].temp + 'degrees<br/>'; 
     tempHTML = tempHTML + 'Temperature Min: ' + data.main[0].temp_min + 'degrees<br/>'; 
     tempHTML = tempHTML + 'Temperature Max: ' + data.main[0].temp_max + 'degrees<br/>'; 
     tempHTML = tempHTML + 'Pressure: ' + data.main[0].pressure + 'Kpa<br/>'; 
     tempHTML = tempHTML + 'Humidity: ' + data.main[0].humidity + '%<br/>'; 

     tempHTML = tempHTML + '<h3>WIND:</h3>'; 
     tempHTML = tempHTML + 'Wind Speed: ' + data.wind[0].speed + 'kmh<br/>'; 
     tempHTML = tempHTML + 'Wind Direction: ' + data.wind[0].deg + 'degrees <br/>'; 

     tempHTML = tempHTML + '<h3>CLOUDS:</h3>'; 
     tempHTML = tempHTML + 'Cloud Coverage: ' + data.clouds[0].all + '%<br/>'; 

     document.getElementById('weather_output').innerHTM = tempHTML; 
    }); 

如果你看我的JSFiddle我得到一個控制檯錯誤:一個對象,而不是一個數組,因此使用[0]

Uncaught SyntaxError: Unexpected token : api.openweathermap.org/data/2.5/weather?lat=13.3428&lon=-6.26612&cnt=1&callback=jQuery191009959305939264596_1390699334749&_=1390699334750:1 
Uncaught TypeError: Cannot read property 'temp' of undefined (index):36 
+0

您還在錯誤地訪問某些屬性。例如,你應該訪問'data.sys.country'而不是'data.sys [0] .country'。你在你的代碼中這樣做。 –

+0

[It does,@FelixKling](http://api.openweathermap.org/data/2.5/weather?q=London,uk&callback=jsonp)。 – Andy

+0

@Andy:Mmh,那麼錯誤消息'Uncaught SyntaxError:Unexpected token:'沒有意義或者不相關。 *編輯:*嗯,它並沒有在我第一次在Chrome中加載小提琴時發出JSOP請求,但是當我再次運行它時,它確實很奇怪。無論如何,我會刪除我的第一條評論。 –

回答

0

如果你看看返回的JSON,在main關鍵點導致錯誤。

使用data.main.temp代替..

這同樣適用於在windsyscloud性能..

最後,你缺少的innerHTML末最後升。

演示所有修復程序都在http://jsfiddle.net/KLtLD/17/

+0

Gaby,謝謝!粉筆另一個爲我學習。感謝您的幫助! – TheRealPapa