数组对象去重

需求数组对象去重

[{key:1,name:'哈哈'},{key:2,name:'鹤鹤'},{key:1,name:'哈哈'}] function reduceData(data){ let obj = {} let arr = data.reduce(function(item,next){ obj[next.item_id] ? '' : obj[next.item_id] = true && item.push(next) return item },[]) return arr }