如何通过JSON响应走路吗？ [英] How to walk through json response?
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问题描述
我有这样的JSON响应，我想walke认为它得到了天气条件，如湿和temp_C等。我尝试了一些方法，但没有奏效。
（{数据：{current_condition：[{cloudcover：50，
湿度：44，
observation_time：上午12点10分
precipMM：0.0，
pressure：1013
temp_C：-2，
temp_F：29，
可见性：16，
气象code：116
weatherDesc：[{值：晴间多云}]，
weatherIconUrl：[{值：http://www.worldweatheronline.com/images/wsymbols01_png_64/wsymbol_0004_black_low_cloud.png}]，
winddir16Point：W
winddirDegree：280，
windspeedKmph：24，
windspeedMiles：15
}]，
要求：[{查询：罗切斯特，美利坚合众国
类型：城
}]，
天气预报：[{日期：2012-02-25，
precipMM：2.2，
tempMaxC：-1，
tempMaxF：31，
tempMinC：-5，
tempMinF：24，
气象code：116
weatherDesc：[{值：晴间多云}]，
weatherIconUrl：[{值：http://www.worldweatheronline.com/images/wsymbols01_png_64/wsymbol_0002_sunny_intervals.png}]，
winddir16Point：W
winddirDegree：281
winddirection：W
windspeedKmph：54
windspeedMiles：34
}]
}}）
我尝试这些：
$。的getJSON（urlFromMyAPI，功能（数据）{
警报（data.current_condition.temp_C）;
警报（data.temp_C）;
警报（数据[current_condition] .temp_C）;
//我也用循环
对于（i = 0; I＆LT; = 3;我++）{
警报（data.current_condition [I]）
}
}）;
};
解决方案
我觉得你的主要问题是，你的数据是嵌套在一个名为对象的内部数据，所以你需要一个参考额外级别进去了。这也是一个容易得多，看看当你格式化你这样的反应，使你可以更清楚地看到嵌套对象和数组你有什么：
（{数据：{
current_condition：[
{
cloudcover：50，
湿度：44，
observation_time：上午12点10分
precipMM：0.0，
pressure：1013
temp_C：-2，
temp_F：29，
可见性：16，
气象code：116
weatherDesc：[
{值：晴间多云}
]
weatherIconUrl：[
{值：HTTP：\\ / \\ / www.worldweatheronline.com \\ /影像\\ / wsymbols01_png_64 \\ /wsymbol_0004_black_low_cloud.png}
]
winddir16Point：W
winddirDegree：280，
windspeedKmph：24，
windspeedMiles：15
}
]
请求：
{查询：罗切斯特，美利坚合众国，类型：城}
]
天气预报：[
{
日期：2012-02-25，
precipMM：2.2，
tempMaxC：-1，
tempMaxF：31，
tempMinC：-5，
tempMinF：24，
气象code：116
weatherDesc：[
{值：晴间多云}
]
weatherIconUrl：[
{值：HTTP：\\ / \\ / www.worldweatheronline.com \\ /影像\\ / wsymbols01_png_64 \\ /wsymbol_0002_sunny_intervals.png}
]
winddir16Point：W
winddirDegree：281
winddirection：W
windspeedKmph：54
windspeedMiles：34
}
]
}
}）
这是说，如果你想获得目前的状况 temp_C ，它会是这样（请注意我对你的匿名函数，使$ C更改参数名$ C减少混乱）：
$。的getJSON（urlFromMyAPI，函数（响应）{
变种临时= response.data.current_condition [0] .temp_C;
}）;
如果你想临时为数字，你可能需要做：
$。的getJSON（urlFromMyAPI，函数（响应）{
变种临时= parseInt函数（response.data.current_condition [0] .temp_C，10）;
}）;
I have this json response and I'm trying to walke thought it to get the weather conditions such as "humidity" and "temp_C" and so on. I tried some ways but didn't work.
({ "data" : { "current_condition" : [ { "cloudcover" : "50",
"humidity" : "44",
"observation_time" : "12:10 AM",
"precipMM" : "0.0",
"pressure" : "1013",
"temp_C" : "-2",
"temp_F" : "29",
"visibility" : "16",
"weatherCode" : "116",
"weatherDesc" : [ { "value" : "Partly Cloudy" } ],
"weatherIconUrl" : [ { "value" : "http://www.worldweatheronline.com/images/wsymbols01_png_64/wsymbol_0004_black_low_cloud.png" } ],
"winddir16Point" : "W",
"winddirDegree" : "280",
"windspeedKmph" : "24",
"windspeedMiles" : "15"
} ],
"request" : [ { "query" : "Rochester, United States Of America",
"type" : "City"
} ],
"weather" : [ { "date" : "2012-02-25",
"precipMM" : "2.2",
"tempMaxC" : "-1",
"tempMaxF" : "31",
"tempMinC" : "-5",
"tempMinF" : "24",
"weatherCode" : "116",
"weatherDesc" : [ { "value" : "Partly Cloudy" } ],
"weatherIconUrl" : [ { "value" : "http://www.worldweatheronline.com/images/wsymbols01_png_64/wsymbol_0002_sunny_intervals.png" } ],
"winddir16Point" : "W",
"winddirDegree" : "281",
"winddirection" : "W",
"windspeedKmph" : "54",
"windspeedMiles" : "34"
} ]
} })
I tried these:
$.getJSON(urlFromMyAPI, function (data) {
alert(data.current_condition.temp_C);
alert(data.temp_C);
alert(data[current_condition].temp_C);
// I also use loop
for (i = 0; i <= 3; i++) {
alert(data.current_condition[i])
}
});
};
解决方案
I think your main issue is that your data is nested inside an object named data so you need an extra level of reference to get inside it. It's also a lot easier to see what you've got when you format your response like this so you can see the nested objects and arrays more clearly:
({ "data": {
"current_condition": [
{
"cloudcover": "50",
"humidity": "44",
"observation_time": "12:10 AM",
"precipMM": "0.0",
"pressure": "1013",
"temp_C": "-2",
"temp_F": "29",
"visibility": "16",
"weatherCode": "116",
"weatherDesc": [
{"value": "Partly Cloudy" }
],
"weatherIconUrl": [
{"value": "http:\/\/www.worldweatheronline.com\/images\/wsymbols01_png_64\/wsymbol_0004_black_low_cloud.png" }
],
"winddir16Point": "W",
"winddirDegree": "280",
"windspeedKmph": "24",
"windspeedMiles": "15"
}
],
"request": [
{"query": "Rochester, United States Of America", "type": "City" }
],
"weather": [
{
"date": "2012-02-25",
"precipMM": "2.2",
"tempMaxC": "-1",
"tempMaxF": "31",
"tempMinC": "-5",
"tempMinF": "24",
"weatherCode": "116",
"weatherDesc": [
{"value": "Partly Cloudy" }
],
"weatherIconUrl": [
{"value": "http:\/\/www.worldweatheronline.com\/images\/wsymbols01_png_64\/wsymbol_0002_sunny_intervals.png" }
],
"winddir16Point": "W",
"winddirDegree": "281",
"winddirection": "W",
"windspeedKmph": "54",
"windspeedMiles": "34"
}
]
}
})
That said, if you want to get the current condition temp_C, it would be like this (note I changed the argument name for your anonymous function to make the code less confusing):
$.getJSON( urlFromMyAPI, function(response){
var temp = response.data.current_condition[0].temp_C;
});
If you want the temp as a number, you may need to do this:
$.getJSON( urlFromMyAPI, function(response){
var temp = parseInt(response.data.current_condition[0].temp_C, 10);
});
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