Loading Indicator

When the Chart visualizes local data, loading is instant. But when the Chart is bound to a remote data source, loading may take a considerable amount of time. To keep the viewer's attention, the Chart can display a loading indicator.

DevExtreme HTML5 JavaScript Charts LoadingIndicator

To activate the loading indicator, assign true to the loadingIndicator | show option. Once data is loaded, the loading indicator will be hidden automatically.

jQuery
JavaScript
$(function() {
    $("#chartContainer").dxChart({
        // ...
        loadingIndicator: {
            show: true
        }
    });
});
Angular
HTML
<dx-chart ... >
    <dxo-loading-indicator [show]="true"></dxo-loading-indicator>
</dx-chart>

If you need to show or hide the loading indicator at runtime, call the showLoadingIndicator() or hideLoadingIndicator() method.

jQuery
JavaScript
var chart = $("#chartContainer").dxChart("instance");
chart.showLoadingIndicator();
chart.hideLoadingIndicator();
Angular
TypeScript
import { ..., ViewChild } from '@angular/core';
import { DxChartModule, DxChartComponent } from 'devextreme-angular';
// ...
export class AppComponent {
    @ViewChild(DxChartComponent) chart: DxChartComponent;
    showLoadingIndicator () {
        this.chart.instance.showLoadingIndicator();
    };
    hideLoadingIndicator () {
        this.chart.instance.hideLoadingIndicator();
    };
}
See Also