Question

JS新手。该声明似乎不起作用：

if (kcdfp_parcel[i].InActive == 0)

数据是带有变量＆＃34; kcdfp_parcel＆＃34;的geoJSON文件。

这是文件的一小部分：

kcdfp_parcel = [{ ＆＃34;输入＆＃34;：＆＃34; FeatureCollection＆＃34;，＆＃34; crs＆＃34;：{＆＃34; type＆＃34;：＆＃34; name＆＃34;，＆＃34; properties＆＃34;：{＆＃34; name＆＃34;：＆＃34 ;瓮：OGC：DEF：CRS：OGC：1.3：CRS84＆＃34; }，

"features": [
{ "type": "Feature", "properties": { "MAJOR": "000440", "MINOR": "0018", "PIN": "0004400018", "FarmID": 3101.000000, "LastName": "Codiga", "Acres": 62.940000, "Cooperativ": null, "InActive": 0, "ParcelNumb": "0004400018", "Shape_Leng": 0.024319, "Shape_Area": 0.000030 }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -122.254601971999989,

我是否正确引用了LastName字段（例如，我是否需要使用kcdfp_parcel.features.InActive）？

或者，我的IF声明错了吗？

Answer 1

应该可以参考＆＃34; InActive＆＃34;通过kcdfp_parcel.features[some_index].properties.InActive，如下例所示。通过console.log在浏览器控制台上输出如下所示：

功能索引0的属性InActive为0，ParcelNumb为   0004400018
  功能索引1具有属性InActive为0和ParcelNumb   0006400009

<!DOCTYPE html>
<html>
    <meta charset="UTF-8">
    <body>
        <h1>Check your browser console...</h1>
    </body>
    <script type="text/javascript">
        var kcdfp_parcel = { 
            "type": "FeatureCollection", 
            "crs": { 
                "type": "name", 
                "properties": { 
                   "name": "…" 
                } 
            }, 
            "features": [ 
                { 
                    "type": "Feature", 
                    "properties": { 
                        "InActive": 0, 
                        "ParcelNumb": "0004400018" 
                    }, 
                    "geometry": { 
                        "type": "Polygon", 
                        "coordinates": [ [ [ -122.254601971999989, 47.364317413000038 ], [ -122.254231611999955, 47.364320569000029 ] ] ] 
                    } 
                }, 
                { 
                    "type": "Feature", 
                    "properties": { 
                        "InActive": 0, 
                        "ParcelNumb": "0006400009" 
                    }, 
                    "geometry": { 
                       "type": "MultiPolygon", 
                       "coordinates": [ [ [ -122.059132819999945, 47.197189012000081 ], [ -122.059119953999982, 47.197182407000071 ] ] ] 
                    } 
                } 
            ]
        };

        for (var i = 0; i < kcdfp_parcel.features.length; i++) {
            console.log("Features index " + i + " has property InActive of " + kcdfp_parcel.features[i].properties.InActive + 
                        " and ParcelNumb of " + kcdfp_parcel.features[i].properties.ParcelNumb);
        }
    </script>
</html>

引用geoJSON文件中的数据

1 个答案: