ABPCMS.Web/lib/chart.js/docs/developers/plugins.md

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# Plugins

Plugins are the most efficient way to customize or change the default behavior of a chart. They have been introduced at [version 2.1.0](https://github.com/chartjs/Chart.js/releases/tag/2.1.0) (global plugins only) and extended at [version 2.5.0](https://github.com/chartjs/Chart.js/releases/tag/2.5.0) (per chart plugins and options).

## Using plugins

Plugins can be shared between chart instances:

```javascript
var plugin = { /* plugin implementation */ };

// chart1 and chart2 use "plugin"
var chart1 = new Chart(ctx, {
    plugins: [plugin]
});

var chart2 = new Chart(ctx, {
    plugins: [plugin]
});

// chart3 doesn't use "plugin"
var chart3 = new Chart(ctx, {});
```

Plugins can also be defined directly in the chart `plugins` config (a.k.a. *inline plugins*):

```javascript
var chart = new Chart(ctx, {
    plugins: [{
        beforeInit: function(chart, options) {
            //..
        }
    }]
});
```

However, this approach is not ideal when the customization needs to apply to many charts.

## Global plugins

Plugins can be registered globally to be applied on all charts (a.k.a. *global plugins*):

```javascript
Chart.plugins.register({
    // plugin implementation
});
```

> Note: *inline* plugins can't be registered globally.

## Configuration

### Plugin ID

Plugins must define a unique id in order to be configurable.

This id should follow the [npm package name convention](https://docs.npmjs.com/files/package.json#name):

- can't start with a dot or an underscore
- can't contain any non-URL-safe characters