Gets the nearest x pages. Useful for pagination where there may be many results, but you only want to display a max of X pages. It will always put the current page in the middle, except if num_to_show is odd, if its even, it will be in the middle, with the one extra on left.

getNearestPages.js

/**
 * Gets the nearest x pages. 
 * 
 * Useful for pagination where there may be many results, but you only want to display a max of X pages.
 * It will always put the current page in the middle, except if num_to_show is odd, if its even, it will be in the
 * middle, with the one extra on left.
 */
function getNearestPages(current_page, total_pages, num_to_show) {
    var near_pages = [];
    var num_to_show = 3;
    var mid = Math.round(num_to_show / 2);
    var start = (current_page + mid - num_to_show);
    if (start < 1) {
        start = 1;
    }
    if (start+num_to_show > total_pages) {
        start = total_pages - num_to_show + 1;
    }
    for (var i = start; i < start+num_to_show; i++) {
        if (i >= 1 && i <= total_pages) {
            near_pages.push({
                number : i,
                current : (i == current_page)
            });
        }
    }
    return near_pages;
}