demo D185

Shadow columns: rank and movement in Web Component

Rank, percentile and places moved; sort by places moved for live top movers

shadow: { of, kind: 'rankChange' }

This grid adds shadow columns for rank, percentile and places moved, so sorting by places moved surfaces the live top movers. It turns a changing feed into a leaderboard of who rose and fell most, from the movements it already tracks.

Building…

Loading a live grid…

This is the web component version. A lattice-grid custom element renders the grid with no build step, its configuration set as a property, so it works on a page that has no bundler at all.

The configuration

<link rel="stylesheet" href="https://cdn.latticegrid.dev/lattice-grid@1.108.0/lattice-grid.min.css">

<script type="module">
  import { defineLatticeGrid } from 'https://cdn.latticegrid.dev/lattice-grid@1.108.0/modules/webcomponent.esm.min.js';
  defineLatticeGrid();
</script>

<lattice-grid row-key="id" style="display: block; height: 460px"></lattice-grid>

<script type="module">
  const grid = document.querySelector('lattice-grid');
  grid.config = {
    highlightOnChange: { duration: 500 },
    columns: [
      { field: 'symbol', title: 'Symbol', layout: { pin: 'start', width: 120 } },
      { field: 'price', title: 'Price', type: 'number' },
      { id: 'rank',  title: 'Rank',   shadow: { of: 'price', kind: 'rank' }, type: 'number' },
      // rankChange is places climbed since the baseline: the top-movers column.
      { id: 'moved', title: 'Places moved', shadow: { of: 'price', kind: 'rankChange' }, type: 'number', format: { signed: true } },
      { id: 'pct',   title: 'Percentile',   shadow: { of: 'price', kind: 'percentile' }, type: 'number' },
    ],
    // Land sorted on the movers.
    state: { sort: [{ col: 'moved', dir: 'desc' }] },
  };
  grid.rows = rows;  // trading book records
</script>