var contacts = [
{ account: "Acme", firstName: "John", lastName: "Snow" },
{ account: "Metal Industries", firstName: "Ted", lastName: "Smith" },
{ account: "Acme", firstName: "Sara", lastName: "Butler" },
{ account: "HiTech Corp", firstName: "Sam", lastName: "Johnson" },
{ account: "HiTech Corp", firstName: "Arnold", lastName: "Williams" },
{ account: "Metal Industries", firstName: "Jessica", lastName: "Westcoat" },
{ account: "Acme", firstName: "Kyle", lastName: "Johnson" },
{ account: "HiTech Corp", firstName: "Jason", lastName: "Fernandez" }
];
The goal is to get this output:
result = {
"Acme": ["John Snow", "Kyle Johnson", "Sara Butler"],
"HiTech Corp": ["Arnold Williams", "Jason Fernandez", "Sam Johnson"],
"Metal Industries": ["Jessica Westcoat", "Ted Smith"]
}
My function below is not returning the array of values and only returns the last value
const convertArrayToObject = (array, key) => {
const initialValue = {}
return array.reduce((obj, item) => {
return {...obj,[item[key]]: item,}
}, initialValue)
}
Any help is appreciated
var contacts = [
{ account: "Acme", firstName: "John", lastName: "Snow" },
{ account: "Metal Industries", firstName: "Ted", lastName: "Smith" },
{ account: "Acme", firstName: "Sara", lastName: "Butler" },
{ account: "HiTech Corp", firstName: "Sam", lastName: "Johnson" },
{ account: "HiTech Corp", firstName: "Arnold", lastName: "Williams" },
{ account: "Metal Industries", firstName: "Jessica", lastName: "Westcoat" },
{ account: "Acme", firstName: "Kyle", lastName: "Johnson" },
{ account: "HiTech Corp", firstName: "Jason", lastName: "Fernandez" }
];
const convertArrayToObject = (array, key) => {
const initialValue = {}
array.forEach((obj, item) => {
initialValue[obj[key]] = initialValue[obj.account] || []
initialValue[obj[key]].push(`${obj.firstName} ${obj.lastName}`)
})
return initialValue
}
console.log(convertArrayToObject(contacts, 'account'))
You were close, just missing that when you set up the object in the resultant array, you need to set it as an array - in this script that would be [k]: [v] and not [k]: v
var contacts = [
{ account: "Acme", firstName: "John", lastName: "Snow" },
{ account: "Metal Industries", firstName: "Ted", lastName: "Smith" },
{ account: "Acme", firstName: "Sara", lastName: "Butler" },
{ account: "HiTech Corp", firstName: "Sam", lastName: "Johnson" },
{ account: "HiTech Corp", firstName: "Arnold", lastName: "Williams" },
{ account: "Metal Industries", firstName: "Jessica", lastName: "Westcoat" },
{ account: "Acme", firstName: "Kyle", lastName: "Johnson" },
{ account: "HiTech Corp", firstName: "Jason", lastName: "Fernandez" }
];
const convertArrayToObject = (array, key) => {
const initialValue = {}
return array.reduce((obj, item) => {
let k = item[key], v=item.firstName + ' ' + item.lastName;
if (obj[k]) obj[k].push(v);
else obj = { ...obj, [k]: [v] }
return obj
}, initialValue)
}
console.log(convertArrayToObject(contacts, 'account'))