从数组中删除 object 到给定日期 javascript

Question

Hi i have searched all over the place and cannot able to get this things done

I want to delete outdated(upto yesterday) objects from array

My array looks like this

 [{"apdate": "09-12-2020", "booked": "14:30"}, 
  {"apdate": "11-12-2020", "booked": "19:30"}, 
  {"apdate": "10-12-2020", "booked": "19:00"}, 
  {"apdate": "17-12-2020", "booked": "14:30"}, 
  {"apdate": "17-12-2020", "booked": "15:30"}, 
  {"apdate": "17-12-2020", "booked": "19:00", "phone": "9898989898"}, 
  {"apdate": "10-01-2021", "booked": "16:00"}, 
  {"apdate": "29-01-2021", "booked": "18:30"}, 
  {"apdate": "01-02-2021", "booked": "14:00", "name": "Anand", "uuid": "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}, 
  {"apdate": "01-02-2021", "booked": "10:00", "name": "Anand", "uuid": "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}, 
  {"apdate": "01-02-2021", "booked": "03:30", "name": "Anand", "uuid": "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}]

Please guide me

Answer 1

I want to delete outdated(up to yesterday ) objects from the array

To be honest, you should keep in mind that never mutate your data

==> Just use it based on your needs.

You can use .filter to filter your data based on a given_date .

 const data = [ {apdate: "09-12-2020", booked: "14:30"}, {apdate: "11-12-2020", booked: "19:30"}, {apdate: "10-12-2020", booked: "19:00"}, {apdate: "17-12-2020", booked: "14:30"}, {apdate: "17-12-2020", booked: "15:30"}, {apdate: "17-12-2020", booked: "19:00", phone: "9898989898"}, {apdate: "10-01-2021", booked: "16:00"}, {apdate: "29-01-2021", booked: "18:30"}, {apdate: "01-02-2021", booked: "14:00", name: "Anand", uuid: "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}, {apdate: "01-02-2021", booked: "10:00", name: "Anand", uuid: "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}, {apdate: "01-02-2022", booked: "03:30", name: "Anand", uuid: "cPA7ND7U2jdw7qY6nHf4kWuxyx53"} ]; const convertStringToDate = (strDate) => { const values = strDate.split("-"); return new Date(values[2], values[1] - 1, values[0]); }; const filterDataByGivenDate = (data, givenDate) => data.filter(r => convertStringToDate(r.apdate) >= givenDate); const today = new Date(); const yesterday = today.setDate(today.getDate() - 1); console.log(filterDataByGivenDate(data, yesterday));

A more elegant way is using moment.js

 const data = [ {apdate: "09-12-2020", booked: "14:30"}, {apdate: "11-12-2020", booked: "19:30"}, {apdate: "10-12-2020", booked: "19:00"}, {apdate: "17-12-2020", booked: "14:30"}, {apdate: "17-12-2020", booked: "15:30"}, {apdate: "17-12-2020", booked: "19:00", phone: "9898989898"}, {apdate: "10-01-2021", booked: "16:00"}, {apdate: "29-01-2021", booked: "18:30"}, {apdate: "01-02-2021", booked: "14:00", name: "Anand", uuid: "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}, {apdate: "01-02-2021", booked: "10:00", name: "Anand", uuid: "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}, {apdate: "01-02-2022", booked: "03:30", name: "Anand", uuid: "cPA7ND7U2jdw7qY6nHf4kWuxyx53"} ]; const filterDataByGivenDate = (data, givenDate) => data.filter(r => moment(r.apdate, 'DD-MM-YYYY').isSameOrAfter(givenDate)); const yesterday = moment().subtract(1, 'days'); console.log(filterDataByGivenDate(data, yesterday));

 <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js"></script>

---

The filter() method creates a new array with all elements that pass the test implemented by the provided function.

Answer 2

You can use Lodash Filter & combining it will moment.js will do the trick.

const data = [
    {"apdate": "09-12-2020", "booked": "14:30"}, 
    {"apdate": "11-12-2020", "booked": "19:30"}, 
    {"apdate": "10-12-2020", "booked": "19:00"}, 
    {"apdate": "17-12-2020", "booked": "14:30"}, 
    {"apdate": "17-12-2020", "booked": "15:30"}, 
    {"apdate": "17-12-2020", "booked": "19:00", "phone": "9898989898"}, 
    {"apdate": "10-01-2021", "booked": "16:00"}, 
    {"apdate": "29-01-2021", "booked": "18:30"}, 
    {"apdate": "01-02-2021", "booked": "14:00", "name": "Anand", "uuid": "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}, 
    {"apdate": "01-02-2021", "booked": "10:00", "name": "Anand", "uuid": "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}, 
    {"apdate": "01-02-2021", "booked": "03:30", "name": "Anand", "uuid": "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}
];

const filteredData = _.filter(data, item => {
    const apdate = moment(item.apdate, 'DD-MM-YYYY');
    const today = moment();
    const difference = apdate.diff(today, 'days');
    
    // You can modify the condition according to your requirements;
    return difference >= 0;
});

console.log(filteredData)

Answer 3

Filter the array and keep the only ones you need. Add your date comparision logic as your need.

 let a = [{"apdate": "09-12-2020", "booked": "14:30"}, {"apdate": "11-12-2020", "booked": "19:30"}, {"apdate": "10-12-2020", "booked": "19:00"}, {"apdate": "17-12-2020", "booked": "14:30"}, {"apdate": "17-12-2020", "booked": "15:30"}, {"apdate": "17-12-2020", "booked": "19:00", "phone": "9898989898"}, {"apdate": "10-01-2021", "booked": "16:00"}, {"apdate": "29-01-2021", "booked": "18:30"}, {"apdate": "01-02-2021", "booked": "14:00", "name": "Anand", "uuid": "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}, {"apdate": "01-02-2021", "booked": "10:00", "name": "Anand", "uuid": "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}, {"apdate": "01-02-2021", "booked": "03:30", "name": "Anand", "uuid": "cPA7ND7U2jdw7qY6nHf4kWuxyx53"}]; a = a.filter(obj => { // add your date comparison logic here and return true for elements you want to keep // in this example it will keep elements with '01-02-2021' // you may add here your logic to compare dates return obj.apdate === '01-02-2021'; }) // now this way you have cleared elements from a console.log(a);