html - CSS Grid Layout in Chrome seems not to work properly with more than 1000 rows

Question

I have created an example of a sliding grid with fixed headers, using the "CSS Grid Layout" and "sticky position" technologies. For convenience, the content of the grid is generated by a script, which I think works well.

function fillGrid(selector, rows) {
  let cols = 3;
  let grid = $(selector);
  
  grid.empty();
  
  //cr header
  grid.append($('<div>').addClass('hcr').text('#'));
  
  //col headers
  for (let c = 1; c <= cols; c++) {
    grid.append($('<div>').addClass('hc').text(`Column ${c}`));
  }
  
  for (let r = 1; r <= rows; r++) {
    //row header
    grid.append($('<div>').addClass('hr').text(r));
    
    //cells
    for (let c = 1; c <= cols; c++) {
      grid.append($('<div>').addClass('c').text(`Cell ${r}-${c}`));
    }
  }
}

$('#reload').click(e => {
  var rows = Number.parseInt($('#rows').val());
  fillGrid('#grid1', rows);
})

$(document).ready(function() {
  fillGrid('#grid1', 10);
});

body {
  font-family: 'Segoe UI', sans-serif;
  font-size: 12px;
}

.grid {
  display: grid;
  width: 600px;
  height: 300px;
  grid-template-columns: 40px 200px 100px 500px;
  grid-auto-rows: min-content;
  border: 1px solid #ccc;
  overflow: scroll;
  margin-top: 20px;
  background-color: #aaa;
  margin-right: 10px;
}

.hcr, .hc, .hr {
  background-color: #ddd;
  border-right: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
  padding: 2px;
  position: sticky;
}

.hcr {
  top: 0;
  left: 0;
  z-index: 1;
  text-align: center;
}

.hc {
  top: 0;
  white-space: nowrap;
}

.hr {
  left: 0;
  text-align: center;
}

.c {
  padding: 2px;
  border-right: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
  background-color: #fff;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
  <input type="text" id="rows" value="10" />
  <input type="button" id="reload" value="Reload" />
</div>
<div class="grid" id="grid1"></div>

Answer 1

Ok, the 1000 rows (and also 1000 columns) limit has been intentionally introduced into the Chrome engine for reasons of stability and RAM consumption. A new version of the Grid functionality seems to be in progress and should solve the problem.

Sources:

• https://bugs.chromium.org/p/chromium/issues/detail?id=688640
• https://github.com/w3c/csswg-drafts/issues/1009