I get an array of objects:
const inputStructure = [
{
state: 'LA',
insurance: 'Test1'
},
{
state: 'LA',
insurance: 'Test2'
},
{
state: 'TX',
insurance: 'Test3'
}
]
How can I group objects with the same state property?
I need to create a function which would return the following result:
const outputStructure = {
'LA': {
state: 'LA',
insurances: ['Test1', 'Test2']
},
'TX': {
state: 'TX',
insurances: ['Test3']
}
}
You can use:
const inputStructure = [
{
state: 'LA',
insurance: 'Test1'
},
{
state: 'LA',
insurance: 'Test2'
},
{
state: 'TX',
insurance: 'Test3'
}
];
const data = {};
for (const item of inputStructure) {
if (!data[item.state]) {
data[item.state] = {
state: item.state,
insurances: []
}
}
data[item.state].insurances.push(item.insurance);
}
console.log(data);You can use the reduce array method to achieve it:
const inputStructure = [{
state: 'LA',
insurance: 'Test1'
},
{
state: 'LA',
insurance: 'Test2'
},
{
state: 'TX',
insurance: 'Test3'
}
]
const output = inputStructure.reduce((acc, e) => {
acc[e.state] = ({
state: e.state,
insurances: (acc[e.state]?.insurances || []).concat(e.insurance)
});
return acc;
}, {})
console.log(output)
ObjectandArray.maporreducefunctions? These methods will help you iterate over the structure and create the new structure that you want.groupByfunction, and it's easy to write your own as seen in the duplicate.