js的map和reduce方法之对象数组去重

map方法 
　　

let objArr = [{name: 'xue',age: 24},{name: 'xue',age: 25},{name:'qing'}] const res = new Map(); objArr = objArr.filter((arr) => !res.has(arr.name) && res.set(arr.name, 1))

reduce方法 let obj = {} let objArr = [{name: 'xue',age: 24},{name: 'xue',age: 25},{name:'qing'}] objArr = objArr.reduce((prev, item) => {
　　if(!obj[item.name]){ 　　prev.push(item) 　　obj[item.name] = true } return prev
}, [])