javascript - 如何从 JSON 数据文件访问某些信息？是通过数组的形式吗？

Question

这个问题已经有答案了:

How can I access and process nested objects, arrays, or JSON? (31 个回答)

已关闭 5 年前。

在下面的JSON数据中，我想访问'lon'和'lat'在'coord' 。我知道data.coord会给我[ 'lon', 'lat' ] ，但是我怎样才能获得属于每个的值呢？

这是我的 JSON 数据:

var data = {
    "coord": {
        "lon": 159,
        "lat": 35
    },
    ...
};

Answer 1

您可以像这样访问它们:

var data = { "coord":{ "lon":159, "lat":35 }, "weather":[ { "id":500, "main":"Rain", "description":"light rain", "icon":"https://cdn.glitch.com/6e8889e5-7a72-48f0-a061-863548450de5%2F10n.png?1499366021399" } ], "base":"stations", "main":{ "temp":22.59, "pressure":1027.45, "humidity":100, "temp_min":22.59, "temp_max":22.59, "sea_level":1027.47, "grnd_level":1027.45 }, "wind":{ "speed":8.12, "deg":246.503 }, "rain":{ "3h":0.45 }, "clouds":{ "all":92 }, "dt":1499521932, "sys":{ "message":0.0034, "sunrise":1499451436, "sunset":1499503246 }, "id":0, "name":"", "cod":200 };

console.log('Lon',data.coord.lon);
console.log('Lat',data.coord.lat);

//Also you can do that using object destructuring in es6 like this:

var {lon,lat} = data.coord;
console.log('Lon',lon);
console.log('Lat',lat);

查看 MDN 以了解有关对象和属性的更多信息: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_Objects

查看Object destructuring