no item in the List is selected but I want to select all three marked items, how I can mark the selected item from the list =?
const List = [
{
options: [{ opt: 'a', oid: '1' }, { opt: 'b', oid: '2' }, { opt: 'c', oid: '3' }, { opt: 'd', oid: '4' },
],
marked: [1, 2, 3],
}
]
const [index, setIndex] = useState(0);
const qstn = List[index];
{qstn.options.map((x, id) =>
<Option
value={x.opt}
selected={qstn.marked === id} // here i am selecting items from marked
key={id}
/>
)}
export function Option({ value, selected }) {
return (
<TouchableWithoutFeedback>
<View style={styles.option}>
<View style={{ flex: 8, backgroundColor:selected? '#b8de6f' : '#fff' }}>
<Text style={{ fontSize: 15, fontFamily: 'OpenSans-Regular', }}>{value}</Text>
</View>
</View>
</TouchableWithoutFeedback>
)
}
selected={qstn.marked === id}
I think you are making a mistake here because id is a number and qstn.marked an array. If you want to detect whether that id is in your array change this line to qstn.marked.indexOf(id) !== -1
.