3 дек. 2017 г. · I personally rely on this deep copy strategy. JSON.parse(JSON.stringify(object)) rather than spread operator because it got me into weird ...

20 июл. 2022 г. · React/js- copy array and edit without editing original array [duplicate] · The issue here is that you are creating a new container array ...

3 авг. 2021 г. · Use Array.filter to filter the array based on your condition. and it returns new array. let dataArray = [ { active: true, ...

21 сент. 2021 г. · Copy an object array to use as state - React.js ... I'm having trouble understanding why, when there are objects inside the vector, it doesn't ...

17 апр. 2020 г. · I want to sort this menu array with respect to the rank property value, and also swap elements in the array based on certain conditions. To do ...

13 июн. 2019 г. · Solution. const arr = [{a: 1}] const copy = arr.map(item => ({...item})). Explanation: it sounds like a reference problem.

11 сент. 2022 г. · You are doing a copy of the array in both cases, and in both cases you are mutating the state directly which should be avoided.

20 июн. 2020 г. · you should use map function (appID) => { let clone = this.state.applications.map(item => { if (item.id == appId) { return { ...item, ...

28 окт. 2018 г. · why do you use Object.assign if this.state.newPerson is an array? Just use list.push(personToList) but set your state like this this.state.

7 сент. 2020 г. · Right way to clone objects / arrays during setState in React · 1 · React JS Duplicate object within array · 0 · change of array value change the ...