Now I have object like this
let arr = [{name:'first'},{name:'first1'}] Exprected
[{value:'first'},{value:'first1'}] My attempt
let result = arr.map(el=>{ const {name, ...other} = el; return {value: el.name, ...other} }) 
- Your code works. What's the issue?adiga– adiga2021-04-27 07:14:15 +00:00Commented Apr 27, 2021 at 7:14
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2 Answers
you can do it that way!
let arr = [{name:'first'},{name:'first1'}] //{value: 'first'} let result = arr.reduce((acc,el)=>{ return [...acc, {'value' : el.name}] },[]) 2 Comments
adiga
What is wrong with OP's code. Why use
reduce instead of map when the input and the output have the same number of elements?
Taimoor Qureshi
It's a matter of preference if the length of output and input array is the same. otherwise reduce is an aggregate function (return a single value in the end), map returns an array of transformed values.
You can transform the data using Array.prototype.map.
let arr = [{name:'first'},{name:'first1'}] let result = arr.map(x => {return {value: x.name}}); console.log(result);