Hello i have this aray of objects
[{
name: "person1",
age: 23,
},
{
name: "person2",
age: 23,
},
{
name: "person3",
age: 24,
},
{
name: "person4",
age: 24,
},
{
name: "person5",
age: 25,
}
]
so what i want is to classify this array according to age to get
[
[{
name: "person1",
age: 23,
},
{
name: "person2",
age: 23,
}
],
[{
name: "person3",
age: 24,
},
{
name: "person4",
age: 24,
}
],
[{
name: "person5",
age: 25,
}]
]
I can do it the old fashioned way, but what I want with less code, it's okey to use lodash to get the desired result .
You could first use reduce to create an object where the items are grouped by age stored as a property, then call Object.values on the result:
const arr=[{name:"person1",age:23},{name:"person2",age:23},{name:"person3",age:24},{name:"person4",age:24},{name:"person5",age:25}];
const byAge = arr.reduce((a,b) => (a[b.age] ? a[b.age].push(b) : a[b.age] = [b], a), {})
const result = Object.values(byAge)
console.log(result)We can solve this by using lodash
const MockData = [
{ name: "person1", age: 23, },
{ name: "person2", age: 23, },
{ name: "person3", age: 24, },
{ name: "person4", age: 24, },
{ name: "person5", age: 25, } ];
_.groupBy(MockData, 'age'); // we get the desired result !