求大佬指点哈！js 的一个简单操作，各位有什么建议？

Question

就是拿一组ID跟另一个数组做比较如果有相同得放到相同得新数组里有不相同的放到不相同数组中

Answer 1

[...arr1,...arr2].reduce((result,v)=>{
letindex=result.diff.indexOf(v)
if(index!==-1){
result.same.push(result.diff.splice(index,1)[0]);
}else{
result.diff.push(v);
}
returnresult;
},{same:[],diff:[]})
                            

Answer 2

consta=[1,2,3,4];
constb=[2,3,5,6];
functionfilterArr(arr1,arr2,type){
letdiffArr=[];
letsameArr=[];
sameArr=arr1.filter(v=>{
returnarr2.some(a=>{
returnv==a
})
})
letmergeArr=[...arr1,...arr2];
diffArr=mergeArr.filter(v=>{
return!sameArr.includes(v)
})
if(type=='same'){
returnsameArr
}else{
returndiffArr
}
}
console.log(filterArr(a,b,'same'))//[2,3]
console.log(filterArr(a,b,'diff'))//[1,4,5,6]