📈 Simple SparkLine Chart

A lightweight, customizable, and easy-to-use SparkLine chart library with tooltip and flexible options, written in TypeScript.

DEMO

CodePen 👀

Production 👀

Library

NPMJS 📦

UNPKG </>

GITHUB 🔮

🚀 Features

• 🔥 Lightweight - Small footprint and blazing fast rendering.
• 🎨 Customizable - Control colors, sizes, tooltips, and more.
• 🎯 TypeScript Support - Fully typed for better development experience.
• 📦 Multiple Formats - Available as CommonJS, ESModule, and a global script for easy CDN usage.

📦 Installation

Using npm:

npm install simple-sparkline-chart

Using CDN:

<script src="https://www.unpkg.com/simple-sparkline-chart"></script>

You can then use it via the global SimpleSparkLineChart:

<script>
  new SimpleSparkLineChart(".chart");
</script>

📚 Usage

1️⃣ Basic Example

<div
  class="sparkline"
  data-values="1,2,3,4,5,6,7"
  data-width="200"
  data-height="40"
></div>

<script>
  new SimpleSparkLineChart(".sparkline");
</script>

This will create a basic SparkLine chart using the specified data-values.

2️⃣ With Custom Options

<div
  class="sparkline"
  data-values="0.5,1.5,2.3,3.8,2.9,3.4"
  data-width="300"
  data-height="60"
  data-color-stroke="#00f"
  data-filled="0.3"
  data-tooltip="top"
  data-aria-label="My SparkLine Chart"
></div>

<script>
  new SimpleSparkLineChart(".sparkline");
</script>

🔧 Data Attributes

| Attribute | Type | Default | Description | | ------------------- | ------ | ------------------------ | -------------------------------------------------------------------------------------------------------------------- | | data-values | string | null (Required) | A comma-separated list of values or JSON data to plot. | | data-width | number | 200 | The width of the chart in pixels. | | data-height | number | Proportional to width | The height of the chart in pixels. Automatically calculated based on width, maintaining a proportional aspect ratio. | | data-color-stroke | string | #8956ff | The color of the chart line (stroke). | | data-filled | number | (none) | Defines the opacity of the fill area under the line if set. If not provided, no fill is displayed. | | data-tooltip | string | top | Tooltip position: "top" or "bottom". Tooltip is enabled if this attribute is set. | | data-aria-label | string | Simple SparkLine Chart | Accessible label for the chart. | | data-locale | string | User's locale | The locale used for formatting dates in tooltips (if using timestamp data). |

🧑‍💻 API

You can initialize the chart with the SimpleSparkLineChart constructor, and it automatically processes all matching elements.

Constructor

new SimpleSparkLineChart(selector: string);

• selector: A CSS selector string to target the elements where the chart will be rendered.

🎨 Customization

You can customize the following:

1. Stroke and Fill: Set your own colors for the line and the area below it with data-color-stroke and data-filled.
2. Dimensions: Control the width and height of the chart using data-width and data-height.
3. Tooltips: Enable or disable tooltips with data-tooltip, and adjust their position with data-tooltip-position.

📊 Example of Object Data

You can pass an array of objects with timestamps and values:

<div
  class="sparkline"
  data-values='[
        {"timestamp":1693526400000,"value":0.93},
        {"timestamp":1693612800000,"value":0.9315}
    ]'
  data-tooltip="top"
></div>

<script>
  new SimpleSparkLineChart(".sparkline");
</script>

🚀 Optimized for Performance

• Minimized for production: The library is optimized to deliver minimal JS overhead.
• Supports all modern browsers: Works in all major browsers including Chrome, Firefox, Safari, and Edge.

🔥 CDN Usage

For quick usage without installing npm dependencies:

<script src="https://www.unpkg.com/simple-sparkline-chart"></script>

🔧 Development

To build the project locally:

Install dependencies

npm install

Run the development server

npm start

Build the project

npm run build

Run tests

npm run test

📝 License

This project is licensed under the MIT License - see the LICENSE file for details.

💬 Feedback and Contributions

Feel free to open an issue if you find a bug or have a feature request. Pull requests are welcome! 🙌

Hope you enjoy using Simple SparkLine Chart! 🚀✨