原生js过滤出对象数组中重复id的元素，并将其放置于一个同一个数组中

示例代码

const repeatId = [{id: 1,count: 12,},{id: 1,count: 15,},{id: 2,count: 20,},{id: 3,count: 25,},{id: 2,count: 30,},
];const obj = {};
repeatId.forEach((item) => {if (!Array.isArray(obj[item.id])) {obj[item.id] = [];obj[item.id].push(item);} else {obj[item.id].push(item);}
});console.log(obj);

结果