[英]Cannot read property of undefined, looking for object property
我試圖從每個對象獲取dots
組。 但是我一直無法讀取未定義的屬性點。
let events = fetchEvents[this.state.selectedDay || selected];
在我的組件中,我正在使用:
<EventCalendar
events={events.dots || []}
...
我是我的EventCalendar
組件, this.props.events
undefined
render() {
const {
width,
virtualizedListProps,
initDate,
formatHeader,
upperCaseHeader = false
} = this.props;
const allDayEvents = this.props.events.filter(
event => event.allDayEvent == 1
);
fetchEvents
數組:
2019-03-06: {dots: Array(2), disabled: false, selected: true, selectedColor: "#00CCCB", customStyles: {…}}
2019-03-07: {dots: Array(1), disabled: false, selected: true,
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