//判断数组中对象的值是否有相同的 let arr = [ {id:1,name:2,age:3}, {id:2,name:3:age:24}, {id:1,name:5,age:6} ] const ids = arr.map(value=>value.id); const idsSet = new Set(ids); if(idsSet.size() == ids.length）{ console.log(“不存在同个值”) }else{ console.log(“存在同个值”) }