Stock Market

Grid.js can render complex elements in the table cells. In this example, we will take advantage of the builtin Virtual DOM and Chartist library to render line charts in cells.

import { Grid, h, createRef as gCreateRef } from "gridjs";
import Chartist from 'chartist';

Live Editor

// Chartist options const opts = { height: '30px', showPoint: false, fullWidth:true, chartPadding: {top: 0,right: 0,bottom: 0,left: 0}, axisX: {showGrid: false, showLabel: false, offset: 0}, axisY: {showGrid: false, showLabel: false, offset: 0} }; const grid = new Grid({ sort: true, columns: [ 'Symbol', 'Last price', { name: 'Difference', formatter: (cell) => { return h('b', { style: { 'color': cell > 0 ? 'green' : 'red' }}, cell); } }, { name: 'Trend', sort: false, width: '20%', formatter: (cell) => { const ref = gCreateRef(); const chart = h('div', { ref: ref }) // setTimeout to ensure that the chart wrapper is mounted setTimeout(() => { // render the chart based on cell data ref.current && new Chartist.Line(ref.current, { series: [cell] }, opts); }, 0); return chart; } }], data: [ ['AAPL', 360.2, 20.19, [360, 363, 366, 361, 366, 350, 370]], ['ETSY', 102.1, 8.22, [90, 91, 92, 90, 94, 95, 99, 102]], ['AMZN', 2734.8, -30.01, [2779, 2786, 2792, 2780, 2750, 2765, 2740, 2734]], ['TSLA', 960.85, -40.91, [993, 990, 985, 983, 970, 985, 988, 960]], ] });

// Chartist options
const opts = {
  height: '30px',
  showPoint: false,
  fullWidth:true,
  chartPadding: {top: 0,right: 0,bottom: 0,left: 0},
  axisX: {showGrid: false, showLabel: false, offset: 0},
  axisY: {showGrid: false, showLabel: false, offset: 0}
};
const grid = new Grid({
  sort: true,
  columns: [
    'Symbol',
    'Last price',
    { 
      name: 'Difference', 
      formatter: (cell) => {
        return h('b', { style: {
          'color': cell > 0 ? 'green' : 'red'
        }}, cell);
      }
    },
    {
      name: 'Trend',
      sort: false,
      width: '20%',
      formatter: (cell) => {
        const ref = gCreateRef();
        const chart = h('div', { ref: ref })
        
        // setTimeout to ensure that the chart wrapper is mounted
        setTimeout(() => {
          // render the chart based on cell data
          ref.current && new Chartist.Line(ref.current, {
            series: [cell]
          }, opts);
        }, 0);
        
        return chart;
      }
    }],
  data: [
    ['AAPL', 360.2, 20.19, [360, 363, 366, 361, 366, 350, 370]],
    ['ETSY', 102.1, 8.22, [90, 91, 92, 90, 94, 95, 99, 102]],
    ['AMZN', 2734.8, -30.01, [2779, 2786, 2792, 2780, 2750, 2765, 2740, 2734]],
    ['TSLA', 960.85, -40.91, [993, 990, 985, 983, 970, 985, 988, 960]],
  ]
});

Result

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