MediaWiki:Common.js

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$(function () {

    $('.map-toggle').on('click', function () {

        var mapId = $(this).data('mapid');
        var box = $('#mw-customcollapsible-' + mapId);

        // Already loaded?
        if (box.data('loaded')) return;

        var x = box.data('x');
        var y = box.data('y');
        var z = box.data('z');
        var zoom = box.data('zoom');
        var w = box.data('width');
        var h = box.data('height');

        // Build mapper tag
        var code = `{{#mapper:${x}|${y}|${z}|${zoom}|${w}|${h}}}`;

        // Ask MW API to parse it into HTML
        new mw.Api().post({
            action: 'parse',
            text: code,
            prop: 'text'
        }).done(function (data) {
            var html = data.parse.text['*'];
            box.find('.map-placeholder').replaceWith(html);
            box.attr('data-loaded', 1);
        });
    });

});