jquery数字累加

给$('.wwsl-tx')填写一个数字，然后页面上会从零开始滚动显示，直到等于填入的数字。

function setNums() {
    // $('.wwsl-tx').text(1101);
    var currentNum = $('.wwsl-tx').text(), iss = 0, numText= $(".wwsl-zs");
    var currentLen = $('.wwsl-tx').text().toString().length;
    var setNumText = function (){
        var time=0.1;
        if (iss <= currentNum) {
            iss++;
            setNum(iss, numText);
        }
        if(iss < currentNum){
            setTimeout(function () {
                setNumText();
            },time);
        }
    }           
    setNumText();
    function setNum(num,obj){ 
        var snum = num.toString().split('');
        var slen = snum.length;
        var sdlen = currentLen - slen;
        if (sdlen > 0) {
            for (var i = 0; i < sdlen; i++) {
                snum.unshift('0');
            }
        }
        var snumRevise = snum.reverse(), addArrRevise = [];
        for (var i = 0; i < snumRevise.length; i++) {
            addArrRevise.push(snumRevise[i]);
            if ((i + 1) % 3 == 0) addArrRevise.push(',');
        }
        obj.text(addArrRevise.reverse().join(''));
    }
}