Using native JS scrolltop, refresh into page to navigate to a DOM element

Native JS ScrollTop, and the jquery method is the difference is that jquery does a compatible package.
The function I want to implement is the time position that is anchored to the scroll area based on the current time.
The page is the mobile page, the upper and lower fixed position, the middle is 1 hours 4 grid selection area, from 0 to 24 points.

At first I want to make a deviation, always want to locate a DOM, so that the scrolltop has been 0, how to set it is not possible, and then carefully analyzed to find to be set in the DOM beyond the current viewable area.

So set the overflow-x:scroll on the outer layer, on the DOM, according to the time matching DOM position, according to the index and the height of each cell to calculate the height of the distance, set the scrolltop.

Using native JS scrolltop, refresh into page to navigate to a DOM element