function dateDiffNow(sDate) {
    	
    	//convert sDate string to DATE obj
        sDate = sDate.replace(/:/g, '-');
        sDate = sDate.replace(/ /g, '-');
        var dtArr = sDate.split("-");

        if (dtArr.length >= 3 && dtArr.length < 6) {

            sDate = new Date(dtArr[0], dtArr[1], dtArr[2]);
        } else if (dtArr.length >= 6) {
            //console.log("bbbb=======");	
            sDate = new Date(dtArr[0], dtArr[1], dtArr[2], dtArr[3], dtArr[4], dtArr[5]);
        }
        var sTime = sDate.getTime();

        // construct CURRENT time.
        var now = new Date();
        var years = now.getFullYear(); //get 2021, if use now.getYear(),will get 121!
        var month = add_zero(now.getMonth() + 1); //must add 1 for month.
        var days = add_zero(now.getDate());
        var hours = add_zero(now.getHours());
        var minutes = add_zero(now.getMinutes());
        var seconds = add_zero(now.getSeconds());

        now = new Date(years, month, days, hours, minutes, seconds);
        console.log("y=" + years + "，" + month + "，day=" + days + "，h=" + hours + "，" + minutes + "，" + seconds);
        var eTime = now.getTime();

        var dateDiff = (eTime - sTime) / (24 * 60 * 60 * 1000);

        console.log((eTime + ",=" + sTime) + ",da=" + (eTime - sTime), ",118=" + 118 * 24 * 60 * 60 * 1000 + ",dateDiff=" + dateDiff);
        return dateDiff
    }

    function add_zero(temp) {
        if (temp < 10)
            return "0" + temp;
        else
            return temp;
    }