Update Array containing objects using spread operator
You can use a mix of .map and the ... spread operator
You can set the value after you've created your new array
let array = [{id:1,name:'One'}, {id:2, name:'Two'}, {id:3, name: 'Three'}];
let array2 = array.map(a => {return {...a}})
array2.find(a => a.id == 2).name = "Not Two";
console.log(array);
console.log(array2);.as-console-wrapper { max-height: 100% !important; top: 0; }Or you can do it in the .map
let array = [{id:1,name:'One'}, {id:2, name:'Two'}, {id:3, name: 'Three'}];
let array2 = array.map(a => {
var returnValue = {...a};
if (a.id == 2) {
returnValue.name = "Not Two";
}
return returnValue
})
console.log(array);
console.log(array2);.as-console-wrapper { max-height: 100% !important; top: 0; }There are a few ways to do this. I would suggest using Array.map :
let new_array = array.map(element => element.id == 2 ? {...element, name : 'New Name'} : element);
or with Object.assign :
let new_array = array.map(element => element.id == 2 ? Object.assign({}, element, {name : 'New Name'}) : element);
Map returns a new array, so you shouldn't need the array spread operator.