spinner.js

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define(function (require) {
    var $ = require('jquery');

    var active = false;
    var SHOW_DELAY = 20;

    $('body').append('<div class="elgg-spinner"><div class="elgg-ajax-loader"></div></div>');

    return {
        start: function () {
            active = true;
            setTimeout(function () {
                if (active) {
                    $('body').addClass('elgg-spinner-active');
                }
            }, SHOW_DELAY);
        },

        stop: function () {
            active = false;
            $('body').removeClass('elgg-spinner-active');
        }
    };
});