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@commute/market-data-chartjs

v3.1.0

Published

A library to help you render market data using ChartJS.

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juanjoperazzojuanjoperazzojordi-paradelojordi-paradelo

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Readme

Commute Market Data Render with ChartJS

A library to help you render market data using ChartJS. This was originally developed to be used in a Webflow project, but you can use it in any other platform.

Reference

Requirements

This library requires the use of chartjs, plus a date adapter for its time x-axis scale. Add the following lines inside the <head> tag in your website, in this order:

<script defer src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<script defer src="https://cdn.jsdelivr.net/npm/chartjs-adapter-date-fns/dist/chartjs-adapter-date-fns.bundle.min.js"></script>

Use defer (not async) on these scripts, and load this library's script after them, so the date adapter is registered before any chart is created.

Installation

Add the following line inside the tag in your website:

<script async src="https://cdn.jsdelivr.net/npm/@commute/market-data-chartjs@version/dist/index.js"></script>

How to use

Add the following line inside the tag in your website:

<script async src="https://cdn.jsdelivr.net/npm/@commute/market-data@version/dist/index.js"></script>

Chart Configuration

The chart's <canvas> element accepts a few optional data-* attributes:

  • data-currency: e.g. data-currency="ARS" formats tooltip values as currency instead of plain numbers.
  • data-tick-interval-minutes: e.g. data-tick-interval-minutes="15" forces the x-axis ticks to fall at exact, evenly-spaced multiples of that interval instead of Chart.js's automatic "nice" steps.
  • data-line-color, data-gradient-top-color, data-gradient-bottom-color: override the line and fill colors.
  • data-gradient-angle: e.g. data-gradient-angle="30" tilts the fill gradient clockwise by that many degrees, instead of the default straight-down (0) direction.
  • data-start-time / data-end-time: e.g. data-start-time="11:00" and data-end-time="17:00" pin the x-axis to that fixed schedule window (anchored to today), instead of auto-ranging to only the data received so far. As new points arrive during the day, the line fills in toward the end of a stable axis rather than the axis growing with the data. Both attributes must be set together — if only one is present, the axis auto-ranges as before. Times use HH:MM or HH:MM:SS format.

Number Localization

You can localize numbers by adding the custom attribute 'data-number' to the elements that need that utility. It will get the website's locale by using the attributes 'data-wf-locale=locale' or 'data-locale=locale'. For example, if your HTML has the 'data-wf-locale=es-AR' attribute, your locale would be 'es-AR'.

Special Thanks

A huge thank you to Finsweet for providing the foundation of this project with Finsweet Developer Starter. 💪🏽

Plase refer to the original project for extensive documentation.