function (key) {
        return _.sortBy(files, function (el) {
            return Number($(el).find('span[data-lint]').attr(key)) * -1;
        });
    }
function (key) {
        return _.sortBy(files, function (el) {
            return Number($(el).find('span[data-lint]').attr(key)) * -1;
        });
    }
function ( key ) { return _ . sortBy ( files , function ( el ) { return Number ( $ ( el ) . find ( 'span[data-lint]' ) . attr ( key ) ) * - 1 ; } ) ; }
work-horse @param:  key  The 'data-<key>' to sort by @return: descending sorted array of <li> elements
work - horse