Components are the building blocks for a React Native application. A React Native user interface (UI) is specified by declaring components, often nested. Those components are then mapped to the native UI on the targeted platform.
####Props####
#####`this.props`#####
Components can be configured by passing properties `props` to the constructor. You can access `props` from your component's methods by accessing `this.props`. You should not alter your props within component methods.
####State####
#####`this.state`#####
Components maintain their state using the state object. You can access your component state via `this.state`. Each component should manage its own state. Parent components should not manage children state and children components should not manage parent component state.
#####`this.setState({key: value, ...})`#####
To update or change the state of your component passing a new object representing your newly desired state to `this.setState(obj)`. The specificed keys will be merged into `this.state`. Any existing keys will be overridden by new values.
