Charty, a small library for charts

Charty is a simple library to draw pie and donut charts. Just that, simple to use.

To use it, just link de library with <script src="charty.js"> and between the <header> tag link the css file <link rel="stylesheet" rel="charty.css" (you can define your own css).

How to start using it.

const chart = new Charty({}) 	//for an empty chart(withe examle data)

const chart = new Charty({ 		//With options, everyone is optional except data
    title: 'My Chart',			//The title of the chart
    chartType: 'circle',		//The type of chart, circle(donut) or pie
    data: [						//An array of objects int he format name/value
        {Apples: 45},			//{Name: Value}
        {Oranges: 37},
        {Bananas: 52}
    ],
    precision: false,		//If the data chart have decimal numbers(just two)
    selector: '#app'		//Where the chart will be inserted, must be a valid css selector (default to body)
})

Add additional data

The charts accept insert additional data with the next method:

chart.addData({"Name", Value}) //Name: String, Value: Integer

The chart will be redrawn after insert data

Manipulate the chart

If you want to manipulate the chart's DOM, you can do it through the ID of the chart, every chart have a data-chart-id attribute, and every chart have a unique ID.

const DIV = document.querySelector(`[data-chart-id="${chart.id}"]`)
//Remove the background gradient
DIV.style.backgroundImage = 'none'
//The background will be changed
DIV.style.backgroundColor = 'lightyellow'

By default the charts have a light gradient

Change chart colors

By default the colors are static, if you want to change they, yo must edit the file charty.js and change the colors array in the getColor method.

getColor(index) {
    const colors = [
      'purple', //Change these colors
      'midnightblue',
      'blue',
      'cyan',
      'magenta',
      'yellow',
      'dimgray',
      'orange',
      'brown',
      'indigo',
      'pink',
      'gold'
    ];
    return colors[index];
  };

If this small library is useful for you or liked you, consider to buy a me a coffee ☕ (or pizza 🍕 😃)