Transform a 2-dimensional array into Leaflet.js markers

Hey there, I'm currently facing an issue with generating markers using leaflet js. I have an object that includes multiple entries for each year, and my goal is to create a layer group for each year that can be toggled on and off. However, I've encountered a roadblock - I'm struggling to figure out how to map only the entries that match the parent array, like matching 2016 == 2016.year...

The main challenge lies in mapping the second level items within the object structure:

{
    "2016": [
        {
            "year": 2016,
            "latitude": 50.9500019,
            "longitude": 6.4836722
        },
        {
            "year": 2016,
            "latitude": 50.9500019,
            "longitude": 6.4836722
        }
    ],
    "2017": [
        {
            "year": 2017,
            "latitude": 50.9500019,
            "longitude": 6.4836722
        }
    ]
}

Here's the code snippet I'm currently working with:

const getGroupMarkers = (array, groupName) => Object.keys(array).map(function(keys, value){
    array[keys].map(createMarkers.bind(groupName));
});

While this approach somewhat works, it returns markers for all years instead of just 2016.

If you're interested, here's a link to a pen showcasing what I'm trying to achieve. Look at line 270 for the specific function in question. https://codepen.io/sharperwebdev/pen/gvEQXe?editors=0010

Any assistance or insights on how to tackle this tricky situation would be greatly appreciated!

Thank you

Answer №1

By using bracket notation, I was able to accomplish this task. array[requiredEntry].map(callback);

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