Published
Edited
Nov 8, 2021
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Mapbox Draw color picker
The hitchhiker's guide to web feature services.
Dutch historic building viewer
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await wfsRequest(selectedSource, "GetFeature", {
service: "WFS",
version: capabilities.version,
typeName: capabilities?.featureTypes?.[0],
outputFormat: "application/json"
// srsName: "EPSG:28992",
// bbox: `153112,472050,153942,472990`
})
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await wfsRequest(selectedSource)
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async function wfsRequest(
url,
operation = "GetCapabilities",
extraParameters = {}
) {
const queryParameters = new URLSearchParams({
request: operation,
service: "WFS",
...extraParameters
}).toString();

console.log(queryParameters);

const response = await fetch(`${url}?${queryParameters}`);
const responseFormat = response.headers.get("Content-Type");

// If the WFS server returns Content-Type header containing "json" it will read the data as json, otherwise as text.
const data = responseFormat.includes("json")
? await response.json()
: await response.text();

return {
data: data,
status: response.status
};
}
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defaultSource = "https://geodata.nationaalgeoregister.nl/bag/wfs/v1_1"
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