[{"createTime":1735734952000,"id":1,"img":"hwy_ms_500_252.jpeg","link":"https://activity.huaweicloud.com/cps.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=V1g3MDY4NTY=&utm_medium=cps&utm_campaign=201905","name":"华为云秒杀","status":9,"txt":"华为云38元秒杀","type":1,"updateTime":1735747411000,"userId":3},{"createTime":1736173885000,"id":2,"img":"txy_480_300.png","link":"https://cloud.tencent.com/act/cps/redirect?redirect=1077&cps_key=edb15096bfff75effaaa8c8bb66138bd&from=console","name":"腾讯云秒杀","status":9,"txt":"腾讯云限量秒杀","type":1,"updateTime":1736173885000,"userId":3},{"createTime":1736177492000,"id":3,"img":"aly_251_140.png","link":"https://www.aliyun.com/minisite/goods?userCode=pwp8kmv3","memo":"","name":"阿里云","status":9,"txt":"阿里云2折起","type":1,"updateTime":1736177492000,"userId":3},{"createTime":1735660800000,"id":4,"img":"vultr_560_300.png","link":"https://www.vultr.com/?ref=9603742-8H","name":"Vultr","status":9,"txt":"Vultr送$100","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":5,"img":"jdy_663_320.jpg","link":"https://3.cn/2ay1-e5t","name":"京东云","status":9,"txt":"京东云特惠专区","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":6,"img":"new_ads.png","link":"https://www.iodraw.com/ads","name":"发布广告","status":9,"txt":"发布广告","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":7,"img":"yun_910_50.png","link":"https://activity.huaweicloud.com/discount_area_v5/index.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=aXhpYW95YW5nOA===&utm_medium=cps&utm_campaign=201905","name":"底部","status":9,"txt":"高性能云服务器2折起","type":2,"updateTime":1735660800000,"userId":3}]
数组对象相同属性的相加 let obj = {}; const arr = [ { id: ‘aaa’, value: 11 }, { id: bbb,
value: 21 }, { id: ‘aaa’, value: 111 }, { id: bbb, value: 222 }, { id: ccc,
value: 22 }, { id: ddd, value: 122 }, { id: ccc, value: 22 }, { id: ddd, value:
122 }, { id: ccc, value: 22 }, { id: ddd, value: 122 }, ]; // 第一种方式 arr.forEach(
v => obj[v.id] = obj[v.id] === undefined ? v.value : obj[v.id] + v.value)
console.log(obj) // 第二种方法 arr.forEach(v=>{ if (obj.hasOwnProperty(v.id)) { obj[v
.id] += v.value } else{ obj [v.id] = v.value } }) console.log(obj) 数组去重 //1
reduce去重,针对数组对象 let person = [ {id: 0, name: "A"}, {id: 1, name: "B"}, {id: 2,
name: "C"}, {id: 3, name: "D"}, {id: 1, name: "E"}, {id: 2, name: "F"}, ]; let
obj= {}; let peon = person.reduce((cur,next) => { obj[next.id] ? "" : obj[next.
id] = true && cur.push(next); return cur; },[]) //设置cur默认类型为数组,并且初始值为空的数组
console.log(peon); //2 Set去重,针对纯数组元素 let arr = [1,2,2]; console.log([...new Set(
arr)]); // [1,2]