从 AsyncStorage 读取，解析数组，将字符串转换为日期 object

Question

I'm trying to read array from Async storage with "reminders" key.

Problem is JSON.parse cannot convert 'time' key of element in Array to Date object.

I need to read from storage, parse and assign to reminders state using setReminders()

// EXAMPLE DATA IN ASYNC STORAGE
[{day: 'Monday', time: '2020-04-03T15:17:07.554Z', status: false},
{day: 'Friday', time: '2020-04-03T15:17:07.951Z', status: true},]


// LOAD REMINDERS
  useEffect(readReminders, []);

  function readReminders() {
   AsyncStorage.getItem('reminders').then(value =>setReminders(value));
}

Answer 1

You can parse Date from string using Date.parse(string) or new Date(string) like:

function readReminders() {
   AsyncStorage.getItem('reminders').then(values => {
      const reminders = values.map(item => {
         return {
           ...item,
           time: new Date(item.time)
         }
      });
   });
}

Answer 2

I have add the same issue with the date. try using moment instead of new Date()... 'npm install moment import moment from "moment"; const time= '2020-04-03T15:17:07.554Z'; const todate= moment(time); import moment from "moment"; const time= '2020-04-03T15:17:07.554Z'; const todate= moment(time); Hope this will help.