过滤器时间转换

利用过滤器进行时间转换，
判断是防止传入的时间常数为空或者缺少
filters: {
    timeConver: function(dataStr) {
      if (dataStr != undefined && dataStr != "") {
        var dt = new Date(dataStr);
        var y = dt.getFullYear();
        var m = dt.getMonth() + 1;
        if (m < 10) {
          m = "0" + m;
        }
        var d = dt.getDate();
        if (d < 10) {
          d = "0" + d;
        }
        var hh = dt.getHours();
        if (hh < 10) {
          hh = "0" + hh;
        }
        var mm = dt.getMinutes();
        if (mm < 10) {
          mm = "0" + mm;
        }
        var ss = dt.getSeconds();
        return y + "-" + m + "-" + d + "  " + hh + ":" + mm;
      }
    }
  },