Angular Chart Component

The Chart component for Angular represents a lightweight and powerful chart widget. It offers many advanced features and supports three different rendering technologies - SVG, HTML5 Canvas & VML.

Prerequisites

Refer to Angular Getting Started before you start with this help topic.

Configuration

I. Imports

The Chart component for Angular requires the following imports.

II. @Component Decorator

A class is marked as an Angular component through the @Component decorator:

selector - CSS selector that identifies this component in a template
styles - inline-defined styles to be applied to this component's view
styleUrls - list of URLs to stylesheets to be applied to this component's view
template - inline-defined template for the view
templateUrl - URL to an external file containing a template for the view

The full list of @Component decorator properties is available on: Angular @Component Decorator API

Every jQWidgets Angular component has an [auto-create] attribute which determines whether the component is automatically created or is created on demand by API method call.
By default, the [auto-create] attribute value is true.

III. Create the AppComponent class

The AppComponent class is used to instantiate the app. In some of the examples, we use @ViewChild and ngAfterViewInit.

@ViewChild: makes a reference using a Chart selector. View queries are set before the ngAfterViewInit callback is called.
@ViewChild('chartReference') myChart: jqxChartComponent;
ngAfterViewInit - this is an Angular Component Lifecycle method in which we create our angular components. After the view is initialized, myChart is available.
For more information about this methods please refer to Angular Component Lifecycle API

The following example demonstrates the Chart component for Angular.

app.component.htm

app.component.ts

Run Code

IV. Create Chart component with JSON

Add the imports.
import { Component, ViewChild, AfterViewInit } from '@angular/core';
import { jqxChartComponent } from 'jqwidgets-ng/jqxchart';
@Component decorator:
```
@Component({
    selector: 'app-root',
    template: `<jqxChart #chartReference></jqxChart>`
})
```
Create the AppComponent class.
- @ViewChild: makes a reference using a Chart selector. View queries are set before the ngAfterViewInit callback is called.
```
@ViewChild('chartReference') myChart: jqxChartComponent;
```
- ngAfterViewInit: All Angular components have an integrated method called createComponent that accept a JSON object with the component initialization properties. If no argument is passed, default properties will be used. If you would like to dynamically set properties after creation, you can use the setOptions method.
```
ngAfterViewInit(): void
{
    this.myChart.createComponent(this.chartSettings);
}
```
The following example demonstrates how to create a Chart component for Angular by using the createComponent method.

Properties

The properties which are defined as attributes can be changed directly:

To get or set a property, which we did not define or call a method, we can do the following:

Import @ViewChild decorator:
Add the Chart component:
Get access to the Chart component and its API:
Finally, we can call methods or set/get properties like that:

Every component has a method setOptions which accepts a JSON object as an argument. This object contains component settings and you can use it to set a single or multiple properties dynamically.

Events

The toggle event is raised when a series is toggled by a user click in the chart's legend or through an API call.

The following example demonstrates how to add an event listener.

Note: Event Names of the Chart component for Angular are the same as the Event Names of the jqxChart widget.
The only thing you need to do is to put "on" before the event name and upperCase it's the first letter.

Methods

To invoke methods, you can use the Chart reference.
( refresh() to refreshes the content of the chart widget ) - this.myChart.refresh().

The following example demonstrates how to invoke methods of the Chart component for Angular.

Chart Examples

Overview

The following example demonstrates how to create a Chart component for Angular.

Set Chart Columns with Local Data

The following example demonstrates the Chart bind to Local Data.

app.component.htm

app.component.ts

Run Code

Donut Series

The following example demonstrates how to create a Chart component for Angular with two series of donut type (one inner and another one outer).

Angular Chart Component

Prerequisites

Configuration

I. Imports

II. @Component Decorator

III. Create the AppComponent class

app.component.htm

app.component.ts

IV. Create Chart component with JSON

Properties

Events

Methods

Chart Examples

Overview

Set Chart Columns with Local Data

app.component.htm

app.component.ts

Donut Series

app.component.htm

app.component.ts

Chart API