I need to group by categorycode and categoryname and other fields to add with object. Sample data:
[
{
"categoryCode":"categoryCode1",
"categoryName":"categoryName1",
"cat_type":A
},
{
"categoryCode":"categoryCode1",
"categoryName":"categoryName1",
"cat_type":B
},
{
"categoryCode":"categoryCode2",
"categoryName":"categoryName2",
"cat_type":B
}
]
though Javascript I need to expected output :
[
{
"categoryCode":"categoryCode1",
"categoryName":"categoryName1",
"cat_type":[A,B]
},
{
"categoryCode":"categoryCode2",
"categoryName":"categoryName2",
"cat_type":[B]
}
]
How to achieve this?
You can achieve that with reduce.
const arr = [{
"categoryCode": "categoryCode1",
"categoryName": "categoryName1",
"cat_type": "A"
},
{
"categoryCode": "categoryCode1",
"categoryName": "categoryName1",
"cat_type": "B"
},
{
"categoryCode": "categoryCode2",
"categoryName": "categoryName2",
"cat_type": "B"
}
]
const result = Object.values(
arr.reduce((a, {
categoryCode,
categoryName,
cat_type
}) => (((a[`code_${categoryCode}_name_${categoryName}`] ??= {
categoryCode,
categoryName,
cat_type: []
}).cat_type.push(cat_type)), a), {})
);
console.log(result)