我有此JSON如何获得一个嵌套的JSON数组的长度在Javascript
var data =
[
{
"new": [
{
"screen": "SCR2",
"time_of_order": "20:08:58",
"status": "Viewed",
"item_id": "9,6,5,4",
"quantity": "1",
"vendor_id": "1",
"order_id": "140827080458858O1O1",
"json_value": [
{
"SurCharges": "50"
},
{
"SurCharges": "50"
},
{
"SurCharges": "50"
}
],
"seat_number": "D12"
}
]
}
];
如何获得一个嵌套的数组的长度命名json_value?
这是我的jsfiddle
http://jsfiddle.net/03zw041h/2/
使用
警报(data.new.json_value.length)审判;
但控制台报告错误
Uncaught TypeError: Cannot read property 'json_value' of undefined
优秀的工作精湛,非常感谢你 。 – user3674364 2014-08-27 15:03:53
雅打败了我,下次我放弃小提琴:P – Jack 2014-08-27 15:04:29