CODEWITHSUNDEEP
react-nativereact-native-calendarsreact-native-render-html
krunal patel
krunal patel

Reputation: 25

undefined is not and object(eveluting 'days[0].clone') in react-native-calendars library

async componentWillMount() {

this.setState({
  mMonthStartDate: moment(new Date()).startof('month').format("YYYY-MM-DD"),
  userAcadDetails: this.props.user.userAcadInfo,
  item: JSON.parse(await AsyncStorage.getAsyncValue("""""""""""))
})

render Method

      <Calendar
        style={{ width: Dimensions.get("window").width }}
        current={this.state.mMonthStartDate}
        minDate={this.state.mMonthStartDate}
        maxDate={this.state.mMonthEndDate}
        onMonthChange={month => {
          // this.getStartdate(month.dateString);
          console.log("month changed", month);
        }}
      />

I am not able to crack this whenever debug JS remotely is on Application perfect. when i turn it off this error will display

Upvotes: 1

Views: 1292

Answers (3)

im_tsm
im_tsm

Reputation: 2051

This issue happened for me when I passed wrong date format in the selected property of <Agenda /> component. I fixed the issue by providing the date in correct format i.e. YYYY-MM-DD.

Upvotes: 0

rk5422686
rk5422686

Reputation: 41

In my case I was using markedDates={{}} prop and the reason was that I wasn't passing valid date format which was (YYYY-MM-DD) rather than I was passing (YYYY-M-D). eg :- Valid - 2021-06-06 Invalid - 2021-6-6

Upvotes: 4

Hayk Shakhbazyan
Hayk Shakhbazyan

Reputation: 242

Note: These methods are considered legacy and you should avoid them in new code: UNSAFE_componentWillMount()

I would recommend doing your fetching and async stuff inside of componentDidMount(). The problem is probably that you are trying to set or use some values that are not available atm.

Upvotes: 0

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