多重数组嵌套转换为json格式

var arr=[
    [123,123,123],
    [222,222,222],
    [555,555,555]
]

for(i in arr){
    arr[i] = {name0:arr[i][0], name1:arr[i][1],name2:arr[i][2]...};
    r = {data:arr};
}
console.log(JSON.stringify(r))