const uniqueElements = (arr, fn) => arr.reduce((acc, v) => {
    if (!acc.some(x => fn(v, x))) { acc.push(v); }
    return acc;
}, []);

const stuff = [
    {place:"here",name:"stuff"},
    {place:"there",name:"morestuff"},
    {place:"there",name:"morestuff"},
];

const unique = uniqueElements(stuff, (a,b) => a.place === b.place && a.name === b.name );

//console.log( unique );

[{
    "place": "here",
    "name": "stuff"
  },
  {
    "place": "there",
    "name": "morestuff"
}]

这里是ES6的解决方案，您只想保留最后一项。该解决方案功能强大，符合Airbnb风格。

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' }]

使用ES6“reduce”和“find”数组助手方法的简单解决方案

工作效率高，非常好！

"use strict";

var things = new Object();
things.thing = new Array();
things.thing.push({
    place: "here",
    name: "stuff"
});
things.thing.push({
    place: "there",
    name: "morestuff"
});
things.thing.push({
    place: "there",
    name: "morestuff"
});

// the logic is here

function removeDup(something) {
    return something.thing.reduce(function (prev, ele) {
        var found = prev.find(function (fele) {
            return ele.place === fele.place && ele.name === fele.name;
        });
        if (!found) {
            prev.push(ele);
        }
        return prev;
    }, []);
}
console.log(removeDup(things));

如果您只需要通过对象的一个字段进行比较，则可以使用Array迭代方法执行此操作：

    function uniq(a, param){
        return a.filter(function(item, pos, array){
            return array.map(function(mapItem){ return mapItem[param]; }).indexOf(item[param]) === pos;
        })
    }

    uniq(things.thing, 'place');

使用Set的一个衬垫

var things=新对象（）；things.thing=新数组（）；thing.thing.push（{place:“here”，name:“stuff”}）；things.thing.push（{place:“there”，name:“morestuff”}）；things.thing.push（{place:“there”，name:“morestuff”}）；//为简洁起见，将things.thing分配给myDatavar myData=things.thing；things.thing=数组.from（新集合（myData.map（JSON.stringify）））.map（JSON解析）；console.log（things.thing）

说明：

newSet（myData.map（JSON.stringify））使用字符串化的myData元素创建一个Set对象。Set对象将确保每个元素都是唯一的。然后，我使用array.from基于创建的集合的元素创建一个数组。最后，我使用JSON.parse将字符串化元素转换回对象。

这个解决方案最适合我，因为它使用了Array.from方法，而且它的长度更短，可读性更强。

let person = [
{name: "john"}, 
{name: "jane"}, 
{name: "imelda"}, 
{name: "john"},
{name: "jane"}
];

const data = Array.from(new Set(person.map(JSON.stringify))).map(JSON.parse);
console.log(data);