javascript - Position of a vertical div on an horizontal div with database dates in Rails (timeline) -

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i create kind of timeline (horizontal line: div) data coming database creation date. place kind of marker (vertical line) automatically on timeline date.

the issue timeline div fix size (responsive size in %) when there new data on timeline, others has resize. , example, if have 3 dates: 2009 -2010 -2045 of course there more space between 2010 , 2045 2009 , 2010 ...

do have advises / algorithm please?

thanks advance

if want place them scale, can like:

totaltime = maxdate - mindate each date     ypercentage = (maxdate - date) / totaltime

this put first date @ start, last date @ end, , others in between, proportionally.


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