Example:
array = [{name:'Anna'}, {name:'Bob'}, {name:'Joe'}, {name:'Anna'}]
I need to group this array by name to get separate arrays like:
array 1 = [{name:'Anna'}, {name:'Anna'}]
array 2 = [{name:'Joe'}]
array 3 = [{name:'Bob'}]
Got no idea how to perfom this. Thanks!
You mean to group the items by name I think, and not to sort them.
If this is what you want, you can create an intermediate dictionary with Array.reduce(), whose keys are the names and the values are arrays grouping all object with the same name.
Then use Object.values() to enumerate this dictionary and return all groups:
const arr = [{name:'Anna', hello: 1}, {name:'Bob'}, {name:'Joe'}, {name:'Anna'}];
const result = Object.values(arr.reduce((acc, x) => {
acc[x.name] = [...(acc[x.name] || []), x ];
return acc;
}, {}));
console.log(result)
Group your array by name first and then get the object values. You can use Array.reduce and Object.values for this purpose
var array = [{name:'Anna'}, {name:'Bob'}, {name:'Joe'}, {name:'Anna'}];
const res = array.reduce((acc, item) => {
if (acc[item.name]) {
acc[item.name] = [...acc[item.name], item];
} else {
acc[item.name] = [item];
}
return acc;
}, {});
console.log(Object.values(res));just convert to object based on value using reduce:
const test = array.reduce((acc, el) => {
if (!acc[el.name]) {
return {
...acc,
[el.name]: [el]
}
}
return {
...acc,
[el.name]: [...acc[el.name], el]
}
}, {});
you got an object with fields, each fields contains requested array of elements
