remove duplicate objects based on id from array angular 8
arr.filter((v,i,a)=>a.findIndex(t=>(t.place === v.place && t.name===v.name))===i)
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4
6
this.item = this.item.filter((el, i, a) => i === a.indexOf(el))
Thank you!
6
4
(6 Votes)
0
4
1
const things = {
thing: [
{ place: 'here', name: 'stuff' },
{ place: 'there', name: 'morestuff1' },
{ place: 'there', name: 'morestuff2' },
],
};
const removeDuplicates = (array, key) => {
return array.reduce((arr, item) => {
const removed = arr.filter(i => i[key] !== item[key]);
return [...removed, item];
}, []);
};
console.log(removeDuplicates(things.thing, 'place'));
// > [{ place: 'here', name: 'stuff' }, { place: 'there', name: 'morestuff2' }]
Thank you!
1
4
(1 Votes)
0
3
2
var arrayWithDuplicates = [
{"type":"LICENSE", "licenseNum": "12345", state:"NV"},
{"type":"LICENSE", "licenseNum": "A7846", state:"CA"},
{"type":"LICENSE", "licenseNum": "12345", state:"OR"},
{"type":"LICENSE", "licenseNum": "10849", state:"CA"},
{"type":"LICENSE", "licenseNum": "B7037", state:"WA"},
{"type":"LICENSE", "licenseNum": "12345", state:"NM"}
];
function removeDuplicates(originalArray, prop) {
var newArray = [];
var lookupObject = {};
for(var i in originalArray) {
lookupObject[originalArray[i][prop]] = originalArray[i];
}
for(i in lookupObject) {
newArray.push(lookupObject[i]);
}
return newArray;
}
var uniqueArray = removeDuplicates(arrayWithDuplicates, "licenseNum");
console.log("uniqueArray is: " + JSON.stringify(uniqueArray));
Thank you!
2
3
(2 Votes)
0
4.33
7
function getUnique(arr, comp) {
// store the comparison values in array
const unique = arr.map(e => e[comp])
// store the indexes of the unique objects
.map((e, i, final) => final.indexOf(e) === i && i)
// eliminate the false indexes & return unique objects
.filter((e) => arr[e]).map(e => arr[e]);
return unique;
}
console.log(getUnique(arr,'id'));
Thank you!
7
4.33
(6 Votes)
0
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