add value to state array react code example
Example 1: add new array at the back of react state
this.setState(prevState => ({
myArray: [...prevState.myArray, "new value"]
}))
Example 2: how to add array data on state react
this.setState({ myArray: [...this.state.myArray, 'new value'] }) //simple value
this.setState({ myArray: [...this.state.myArray, ...[1,2,3] ] }) //another array
Example 3: react native update state array of objects
let newMarkers = markers.map(el => (
el.name==='name'? {...el, key: value}: el
))
this.setState({ markers });