arr是需要去重的数组
let arr = [{a:1,b:2},{a:1,b:2},{a:2,b:3}]result是去重后的数组
const strings = arr.map((item) => JSON.stringify(item))const removeDupList = Array.from(new Set(strings))const result = removeDupList.map((item) => JSON.parse(item))
结果：
result = [{a:1,b:2},{a:2,b:3}]
