Execute Loop with delay in Javascript

loopWithDelay.js

    $(document).ready(function () {
        $("#submit").on('click', function () {
            var links = $('#links').val().split(/\n/);
            var apiCount = 0;
            var i=0;
            processNextAjax();
            function processNextAjax() {
                var temp_links = links.slice(i, i + 9);
                console.log(temp_links);
                var data = fetchData(temp_links, apiCount);
                apiCount++;
                if (i > links.length) {
                    return;
                }
                i = i + 9;
                setTimeout(processNextAjax, 4000);
            }
        });
    });