reprocess_assets.js

function importLodash() {
    var  s = document.createElement('script');
    s.type = 'text/javascript';
    s.src  = 'https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js';
    document.body.appendChild(s);
}

function toURL(id) {
    return '/test/reprocess_asset/' + id;
}

function toAjaxPromise(url) {
    return $.get(url);
}


var ids, promises, responses;

importLodash();
ids = [4810627,4810545,4810622];


promises = _(ids)
    .map(toURL)
    .map(toAjaxPromise)
    .value();

responses = _(promises)
    .pluck('responseText')
    .map(JSON.parse)
    .value();