js如何删除对象

Question

arr = [  {id:1,name:'aaa'},  {id:2,name:'bbb'},  {id:3,name:'ccc'}];for(var item in arr){  if(arr.hasOwnProperty(item)){    if(arr[item].id === 2){      delete(arr[item]);      continue;    }  }}这样删除对象后会留有一个undefined占位符,请问如何彻底删掉相应的对象?