see also <a href="http:&#x2F;&#x2F;lhorie.github.io&#x2F;mithril-blog&#x2F;a-spreadsheet-in-60-lines-of-javascript.html" rel="nofollow">http:&#x2F;&#x2F;lhorie.github.io&#x2F;mithril-blog&#x2F;a-spreadsheet-in-60-lin...</a> (it uses mithril )