MediaWiki:Common.js

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// The form is already present in the DOM, so we can run immediately
$(function() {
    const addr = $('input[name="Place[address]"]');
    const lat  = $('input[name="Place[latitude]"]');
    const lon  = $('input[name="Place[longitude]"]');

    console.log("Address fields found:", addr.length);

    if (addr.length === 0) {
        console.log("Address field not found");
        return;
    }

    addr.on('change', function() {
        console.log("Address changed:", addr.val());   // <— ADD THIS LINE

        const q = encodeURIComponent(addr.val());
        if (!q) return;

        const url = 'https://nominatim.openstreetmap.org/search?format=json&q=' + q;

        $.getJSON(url, function(data) {
            if (data && data.length > 0) {
                lat.val(data[0].lat);
                lon.val(data[0].lon);
            }
        });
    });
});