var oldFormatDate = function (date) {

        var y = date.getFullYear();

        var m = date.getMonth() + 1;

        m = m < 10 ? '0' + m : m;

        var d = date.getDate()-7;

        d = d < 10 ? ('0' + d) : d;

        return y + '-' + m + '-' + d;

    };

    var formatDate = function (date) {

        var y = date.getFullYear();

        var m = date.getMonth() + 1;

        m = m < 10 ? '0' + m : m;

        var d = date.getDate();

        d = d < 10 ? ('0' + d) : d;

        return y + '-' + m + '-' + d;

    };

      var date = new Date();

      var oldTransDate = oldFormatDate(date);

      var newTransDate = formatDate(date);

      var transDate = oldTransDate +" ~ "+newTransDate;