JAVASCRIPT

multiple styling react native

	style={[
			styles.button,
			{ backgroundColor: 'green' }
		  ]}

combining two styles react native

<View style={[styles.base, styles.background]} />

multiple styles in react native

// use array of objects instead only object in style props
// to use multiple style 
 <Text style={[styles.red, styles.greenUnderline]}>Green underline</Text>

merge two styles react native

style={{...styles.abcd, ...anotherStyle}}