how to remove duplicate array object in javascript
let person = [{name: "john"}, {name: "jane"}, {name: "imelda"}, {name: "john"}];
function removeDuplicates(data, key) {
return [
...new Map(data.map(item => [key(item), item])).values()
]
};
console.log(removeDuplicates(person, item => item.name));remove duplicates objects from array angular
this.item = this.item.filter((el, i, a) => i === a.indexOf(el))remove duplicate objects from array javascript
const addresses = [...]; // Some array I got from async call
const uniqueAddresses = Array.from(new Set(addresses.map(a => a.id)))
.map(id => {
return addresses.find(a => a.id === id)
})remove duplicates in array object javascript
//check one attribute
let person = [{name: "john"}, {name: "jane"}, {name: "imelda"}, {name: "john"}];
person = person.filter((item, index, self) =>
index === self.findIndex((t) => (
t.name === item.name
))
)
//check two attributes
let person = [{place: "uno", name: "john"}, {place: "duno", name: "jane"}, {place: "duno" ,name: "imelda"}, {place: "uno" ,name: "john"}];
person = person.filter((item, index, self) =>
index === self.findIndex((t) => (
t.place === item.place && t.name === item.name
))
)remove duplicates from array of objects javascript
let arr = [{name: "john"}, {name: "jane"}, {name: "imelda"}, {name: "john"}];
const uniqueArray = arr.filter((v,i,a)=>a.findIndex(t=>(t.name===v.name))===i)
console.log(uniqueArray);remove duplicates from array of objects javascript
arr.filter((v,i,a)=>a.findIndex(t=>(t.place === v.place && t.name===v.name))===i)Copyright © 2021 Codeinu
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