Exploring the world of Leaflet. Have you ever encountered situations where adding a variable name to the GeoJSON file is crucial

Currently, I am in the process of learning Leaflet, JavaScript, and more. To test my understanding, I am using code examples from the Leaflet website and making modifications for my own purposes. However, I have noticed that in all the examples I have come across, the JSON file includes a "var" at the beginning of the initial bracket. I am curious if this is a necessary step when working with JSON files. It would be much more convenient if the JSON files could function as they are generated. For instance, in ArcMap Desktop, there is a tool called Feature-to-JSON which generates output without including a "var = name" as the first data. Is there a way to skip the step of adding the var in my JSON files? If so, it would be greatly helpful to see some code examples to guide me in the right direction.

javascriptjsonleafletgeojson

Answer №1

There is no requirement for your JSON files to be saved as JavaScript files. The examples may showcase this for ease of understanding. Typically, your JSON file would be located on your server or accessed through a REST API. You can asynchronously retrieve and utilize this file in your map using the following approach:

myHttpClient.fetch(myJsonUrl).then(function(data) {
    L.geoJson(data).addTo(map);
});

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