jQuery解析数据并获取经纬度和经纬度，然后插入Google Maps`

问题描述：

我正在使用jQuery从以下URL获取JSON:

I am using jQuery to get JSON from the following URL:

http://api.chartbeat.com/live/geo/v3/?apikey=fakekeytoshowtheurl&host=example.com

这是我得到的JSON的示例:

Here is an example of the JSON I get:

"lat_lngs": [[25, -80, 9], [26, -80, 6], [27, -80, 1], [29, -98, 2], [29, -95, 7], [30, -97, 3], [33, -117, 6], [33, -112, 25], [33, -111, 33], [34, -112, 1], [34, -111, 1], [36, -109, 1], [38, -97, 2], [40, -73, 1], [42, -78, 2]]

我正在尝试使用jQuery并获取每个lat_lngs并运行一个函数.

I am trying to use jQuery and get each of the lat_lngs and run a function.

这是我当前无法使用的代码.

Here is the code I currently have that is not working.

function addMarker(latitude, longitude) {
    marker = new google.maps.Marker({
        position: new google.maps.LatLng(latitude, longitude),
        map: map
    });
}

$.get('http://api.chartbeat.com/live/geo/v3/?apikey=fakekeytoshowtheurl&host=example.com', function(data) {
    $.each(data['lat_lngs'], function() {
        var latlng = data['lat_lngs'].split(',');
        addMarker(latlng[0], latlng[1]);
    })
});

这是行不通的，我收到一条错误消息，说对象[object array]没有方法'split'，并且无论我尝试了什么，我都无法工作.我只想从列出的每个lat_lngs中获取前两个数字，然后运行功能addMarker(lat，long).

This is not working, I get an error saying Object [object array] has no method 'split', and no matter what I have tried, I can't get anything to work. I just want to grab the first two numbers from every lat_lngs that is listed, and run the function addMarker(lat, long).

有人有想法吗?

答

$.each(data['lat_lngs'], function(index, value) {
    addMarker(value[0], value[1]);
})

说明:data['lat_lngs']是一个数组数组.当您使用$.each对其进行迭代时，每次迭代都会将data['lat_lngs']数组的一个元素作为其value接收.

Explanation: data['lat_lngs'] is an array of arrays. When you iterate over it using $.each, each iteration receives as its value one element of the data['lat_lngs'] array.

每个元素本身就是一个数组. (不是字符串！不需要split()任何东西.)

And each element is itself an array. (Not a string! No need to split() anything.)

$.each还将this的值设置为等于当前迭代的值.因此，您也可以这样做:

$.each also sets the this value to equal the current iteration’s value. So you could do this as well:

$.each(data['lat_lngs'], function() {
    addMarker(this[0], this[1]);
})

jQuery解析数据并获取经纬度和经纬度，然后插入Google Maps`

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