怎么判断JSON数组总是否包含某条或多条JSON数据？

Question

 var arr1 = [ { "name" : "心", "id" : "1" }, { "name" : "肝",
                 "id" : "2" }, { "name" : "脑袋", "id" : "3" }, { "name" : "屁股",
                  "id" : "4" } ];

 var arr2 = [ { "name" : "心", "id" : "1" }, { "name" : "肝",
                 "id" : "2" }];

判断arr1 与arr2 的id相同时 arr1 的背景色改变

Answer 1

for(var index2 in arr2){
for(var index1 in arr1){
if(arr2[index2].id==arr1[index1].id){
$("#"+arr1[index1].id).css({"background-color":"#98bf21"});
}
}
}
用这个。上面的写错了，没法修改。坑爹的CSDN.