Question

我是Javascript和传单的初学者。首先，我像这样制作文件geojson.js

 var data={

"type": "FeatureCollection",
"features": [
    {
        "type": "Feature",
        "id": 1,
        "properties": {
            "Name": "Germany",
            "description": "",
            "timestamp": "",
            "begin": "",
            "end": "",
            "altitudeMode": "clampToGround",
            "tessellate": 1,
            "extrude": -1,
            "visibility": -1
        },
        "geometry": {
            "type": "Point",
            "coordinates": [                     
                        51.329219337279405,
                        10.454119349999928 
            ]
        }
       } 
      ]
     }

并像这样访问他们的坐标

points[0] = data.features[0].geometry.coordinates[0];
points[1] = data.features[0].geometry.coordinates[1];

这没关系，但是我想制作几个geojson，将它们存储在同一个文件夹中并通过url leaflet/geojson.js访问它们，而不是通过http或ajax访问它们。像这样：

 var data = $.getJSON( "leaflet/geojson.js", function(json) {
   points[0] = json.features[0].geometry.coordinates[0];

 })

我可以这样做吗？

提前致谢！

Answer 1

如果你想将geojson存储在一个单独的文件中，就像它们在这里http://leafletjs.com/examples/geojson-example.html一样，那么你将不得不以某种方式获取它，就像浏览器获取你的js文件以初始化传单一样。

正如charlietfl所说，只需在脚本标记上方添加脚本标记，就像在我发布的链接中一样。然后，您可以在不使用任何提取方法的情况下引用数据var，因为它已在页面加载时获取。或者，只需将var数据添加到与init脚本相同的文件中。

<script type="text/javascript" src="leaflet/geojson.js">
    var data = {

        "type": "FeatureCollection",
        "features": [
            {
                "type": "Feature",
                "id": 1,
                "properties": {
                    "Name": "Germany",
                    "description": "",
                    "timestamp": "",
                    "begin": "",
                    "end": "",
                    "altitudeMode": "clampToGround",
                    "tessellate": 1,
                    "extrude": -1,
                    "visibility": -1
                },
                "geometry": {
                    "type": "Point",
                    "coordinates": [
                        51.329219337279405,
                        10.454119349999928
                    ]
                }
            }
        ]
    };

    var data2 = {
      ...
    };
</script>
<script>
    var map = L.map('map').setView([39.74739, -105], 13);
    L.tileLayer('http://{s}.tile.cloudmade.com/{key}/22677/256/{z}/{x}/{y}.png', {
        attribution: 'Map data &copy; 2011 OpenStreetMap contributors, Imagery &copy; 2012 CloudMade',
        key: 'BC9A493B41014CAABB98F0471D759707'
    }).addTo(map);

    L.geoJson(data).addTo(map);
    L.geoJson(data2).addTo(map);
</script>

在没有ajax的情况下阅读geoJson

1 个答案: