for循环中的jQuery延迟队列

I have the following function:

我有以下功能:

function getData(a,url) {
        var deferreds = [];
        var i = 1;
        for (i = 1; i <= a.length; i++) {
            var count = i;
            var back = a[i]['link'];
            var path = "https://example.com";
            deferreds.push(
            $.ajax({
                url:path,
                data:{back:back,link:url},
                type:"POST",
                async: true,
                delay: count
            }).done(function(data) {
                //success function here
            }));
        }


        return deferreds;
    }
func