872dfec0f3
New `options.resolve` helper that determines the final value to use from an array of input values (fallback) and a given context and/or index. For now, only the bubble chart support scriptable options, see documentation for details. Add scriptable options documentation and update the bubble chart dataset properties table with their scriptable and indexable capabilities and default values. Also move point style description under the element configuration section.
Configuration
The configuration is used to change how the chart behaves. There are properties to control styling, fonts, the legend, etc.
Global Configuration
This concept was introduced in Chart.js 1.0 to keep configuration DRY, and allow for changing options globally across chart types, avoiding the need to specify options for each instance, or the default for a particular chart type.
Chart.js merges the options object passed to the chart with the global configuration using chart type defaults and scales defaults appropriately. This way you can be as specific as you would like in your individual chart configuration, while still changing the defaults for all chart types where applicable. The global general options are defined in Chart.defaults.global. The defaults for each chart type are discussed in the documentation for that chart type.
The following example would set the hover mode to 'nearest' for all charts where this was not overridden by the chart type defaults or the options passed to the constructor on creation.
Chart.defaults.global.hover.mode = 'nearest';
// Hover mode is set to nearest because it was not overridden here
var chartHoverModeNearest = new Chart(ctx, {
type: 'line',
data: data,
});
// This chart would have the hover mode that was passed in
var chartDifferentHoverMode = new Chart(ctx, {
type: 'line',
data: data,
options: {
hover: {
// Overrides the global setting
mode: 'index'
}
}
})