This is what my original array looks like
[
{
_id: new ObjectId("12934193c51a231b0165425a"),
userid: '62921df1c14a2eea0efa9399',
timestamp: 1653817696599,
},
{
_id: new ObjectId("11934193c51a231b0165425a"),
userid: '62921df1c14a2eea0efa9399',
timestamp: 1653817696600,
}
]
I use this code to convert the timestamp
const newNotifications = notifications.map((element, index) => {
return {
element: element,
new_timestamp: new Date(element.timestamp),
};
});
And this is the result I have
[
{
"element": {
"_id": "12934193c51a231b0165425a",
"userid": "62921df1c14a2eea0efa9399",
"timestamp": 1653817696599,
},
"timestamp": "2022-05-29T09:48:16.599Z",
},
]
I try to make it look like this
[
{
_id: new ObjectId("12934193c51a231b0165425a"),
userid: '62921df1c14a2eea0efa9399',
timestamp: 1653817696599,
new_timestamp: '2022-05-29T09:48:16.599Z',
},
{
_id: new ObjectId("11934193c51a231b0165425a"),
userid: '62921df1c14a2eea0efa9399',
timestamp: 1653817696600,
new_timestamp: '2022-05-29T09:48:16.599Z',
},
]
I would like the timestamp to be part of each newly created object and remove the element property generated by the current mapping.
You can bind the new_timestamp into the existing object nd then return the whole object :
const notifications = [
{
_id: "12934193c51a231b0165425a",
userid: '62921df1c14a2eea0efa9399',
timestamp: 1653817696599,
},
{
_id: "11934193c51a231b0165425a",
userid: '62921df1c14a2eea0efa9399',
timestamp: 1653817696600,
}
];
const newNotifications = notifications.map((element) => {
element['new_timestamp'] = new Date(element.timestamp).toString()
return element;
});
console.log(newNotifications);