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Vyhozeni duplicitnich objektu v poli objektu

JavaScript ES 6

array-object-unique.js Raw #

let x = [
	{
		id: 1,
		name: 'A'
	},
	{
		id: 2,
		name: 'B'
	},
	{
		id: 3,
		name: 'C'
	},
	{
		id: 3,
		name: 'C'
	},
	{
		id: 2,
		name: 'B'
	},
]



// 1
let uniqueArray = [];
let idMap = {};

for (let obj of x) {
	if (!idMap[obj.id]) {
		idMap[obj.id] = true;
		uniqueArray.push(obj);
	}
}



// 2
let uniqueArray = x.filter((obj, index, self) => 
    index === self.findIndex((o) => o.id === obj.id)
);



// 3
let uniqueArray = x.reduce((accumulator, currentValue) => {
    if (!accumulator.some(obj => obj.id === currentValue.id)) {
        accumulator.push(currentValue);
    }
    return accumulator;
}, []);



console.log(uniqueArray)