let information = [{
id: 22,
cno: 1,
username: 'white',
name: 'New Complaint',
stype: null,
cname: 'ff',
product: 'ff',
}];
let updatedInformation = information.map(item => {
return ({ cno: item.cno + 1 })
});
console.log(updatedInformation); // output [ { cno: 2} ]
Is it possible to achieve my expected output as an object without wrapping it in an array using map function?
Ultimately, I want { cno : 2}
If you are only looking to make changes to a single object, it would be more efficient to avoid using map altogether. Instead, consider something like this:
var updatedData = { id: info[ 0 ].id + 1 };
For instance:
var info = [{
id: 22,
name: 'John',
age: 30,
}];
var updatedData = { id: info[ 0 ].id + 1 };
console.log( updatedData );It is recommended to use the reduce function instead of map. While map returns an array, with reduce you can achieve the desired outcome.
var data = [{
id: 22,
cno: 1,
username: 'white',
name: 'New Complaint',
stype: null,
cname: 'ff',
product: 'ff',
}];
var finalData = data.reduce((acc, elem, index) => {
acc.cno = elem.cno + 1
return acc
}, {});
console.log(finalData); // output { cno: 2}To simplify the process, you can utilize ES6 destructuring ([data] = data;) like demonstrated in the example below:
var data = [{
id: 22,
cno: 1,
username: 'white',
name: 'New Complaint',
stype: null,
cname: 'ff',
product: 'ff',
}];
[data] = data; // Extracts the nested object
console.log(data); // Displays data as an object
// Make any necessary modifications to the data
data.cno += 1;
console.log(data); // Displays the updated data as an object
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