React UI Components Documentation
ReactJS Knob Component
The Knob component for ReactJS represents a plugin with round shape which displays a draggable indicator within a range of values.
Prerequisites
Refer to ReactJS Getting Started before you start with this help topic.
Configuration
The Knob component for ReactJS requires the following imports.
Then we create our component class. Properties and methods are put as ReactJS props.
Finally we render our class in the desired HTML element:
Events Methods & Properties
In order to bind to any event, change any property or call any method, we need a reference to the component.
For that we use the ReactJS "ref" Callback Attribute:
Now, when we have a reference, we need to call the desired event/property/method.
This is done in the componentDidMount() ReactJS Component Lifecycle method.
Events
The change event is triggered when the Knob's selection is changed.
The following example demonstrates how to add an event listener:
Methods & Properties
This is how you call methods & props:
Every component have a method setOptions which accepts a object as an argument. This object contains component settings.
Every component also have a method getOptions which returns a object containing the component settings.
Knob Examples
Overview
The following example demonstrates how to create a Knob component.
