js给数组对象去重，根据某一属性判断

最新推荐文章于 2025-03-20 14:30:08 发布

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最新推荐文章于 2025-03-20 14:30:08 发布

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分类专栏： js学习笔记文章标签： vue.js node.js 前端

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let arr = [
     {name: 'C盘', size: "154522"},
     {name: 'D盘', size: "143522"},
     {name: 'E盘', size: "134542"},
     {name: 'F盘', size: "654722"},
     {name: 'C盘', size: "154522"},
     {name: 'C盘', size: "154522"}
];

let obj = {};

 //设置cur默认类型为数组，并且初始值为空的数组
let lastList = arr.reduce((cur,next) => {
    obj[next.id] ? "" : obj[next.id] = true && cur.push(next);
    return cur;
},[])

console.log(lastList);
// (4) [{…}, {…}, {…}, {…}]
0: {name: 'C盘', size: "154522"},
1: {name: 'D盘', size: "143522"},
2: {name: 'E盘', size: "134542"},
3: {name: 'F盘', size: "654722"},