This content originally appeared on DEV Community and was authored by Heru Hartanto
Let say you have an object that you want to use it as payload to make a request
const payload = {
'username': 'Mark',
'Hash' :'8fafasdf8afadsf',
'redirectUrl':'/'
}
but you want to exclude redirectUrl from your object before make request, and you don't want to delete this key, hmmm it is easy doesn't it, just destructuring the object and rearrange it to a new variable
const {username,Hash} = payload;
const newPayload = {username,Hash}
but wait, what if your object is actually updated and now look like this
const payload = {
'username': 'Mark',
'Hash' :'8fafasdf8afadsf',
'redirectUrl':'/',
'firstname':'mark',
'lastname':'brown',
'birthdate':'01/12/2000',
'gender':'MALE',
'address':'planet earth'
}
seems like destructuring and rearrange is kind of hardwork to do.
"Put rest to the last" technique to the rescue
simply put keys that you don't want to use and put the rest of it in the last
const payload = {
'username': 'Mark',
'Hash' :'8fafasdf8afadsf',
'redirectUrl':'/',
'firstname':'mark',
'lastname':'brown',
'birthdate':'01/12/2000',
'gender':'MALE',
'address':'planet earth'
}
let{redirectUrl, ...newPayload} = payload
newPayload
/*
{
'username': 'Mark',
'Hash' :'8fafasdf8afadsf',
'firstname':'mark',
'lastname':'brown',
'birthdate':'01/12/2000',
'gender':'MALE',
'address':'planet earth'
}
*/
If you want to add another key to exclude just simply put keys name after redirectUrl
This content originally appeared on DEV Community and was authored by Heru Hartanto
Heru Hartanto | Sciencx (2021-04-24T06:06:55+00:00) How to clone object except for one or some keys. Retrieved from https://www.scien.cx/2021/04/24/how-to-clone-object-except-for-one-or-some-keys/
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