[
0: {employeeId: "2", name: "chandan", email: "[email protected]"}
1: {gender: "male"}
]
I want this Array like this:
[
0: {employeeId: "2", name: "chandan", email: "[email protected]", gender: "male"}
]
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4 Answers
You can use the spread operator to create a new object, that will copy over the properties of the two existing objects.
arr[0]={...arr[0],...arr[1]};
3 Comments
Chandan Rathore
Array length is not static So I can't use static [0] the keys is dynamic it would be helpful if you suggest code with dynamic value;
ChrisR
So your array has multiple values ? Not only one?
Mark Colby
Józef Podlecki's answer allows for a non-static array length.
array.reduce and spread can help you
const arr = [{
employeeId: "2",
name: "chandan",
email: "[email protected]"
},
{
gender: "male"
}
]
const result = arr.reduce((acc, obj) => ({
...acc,
...obj
}), {});
console.log(result);--Edit
Object.assign flavor ( seems to be 1% slower on chrome 83 though)
const arr = [{
employeeId: "2",
name: "chandan",
email: "[email protected]"
},
{
gender: "male"
}
]
const result = arr.reduce((acc, obj) => Object.assign(acc, obj), {});
console.log(result);5 Comments
Mark Colby
This will do it dynamically, regardless of how many elements are in the array. It loops through the array, spreading the results over and over again.
Józef Podlecki
Now I wonder if
Object.assign is good alternative to that. Would have to make some tests on jsperfJózef Podlecki
Added variant with object.assign
Chandan Rathore
@JózefPodlecki any difference between spread & Object.assign?
use reduce without initial value will agreggate.
const arr = [
{
employeeId: "2",
name: "chandan",
email: "[email protected]",
},
{
gender: "male",
},
];
const output = arr.reduce((acc, curr) => Object.assign(acc, curr));
console.log(output);
answered Jun 7, 2020 at 4:42
Siva Kondapi Venkata
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Comments
You can also do this by mapping it and then taking fromEntries:
var data=[ {employeeId: "2", name: "chandan", email: "[email protected]"}, {gender: "male"}];
var result = Object.fromEntries(data.flatMap(k=>Object.entries(k)));
console.log(result);