1  var aaa=[
2           {"name":"张珊","sex":"man"},
3           {"name":"李斯","sex":"woman"},
4           {"name":"王武","sex":"man"},
5     　　 ];
6 
7  var bbb={"name":"陈柳","sex":"man"};
8  aaa.splice(1,1,bbb);
9  console.log(aaa);