无法在 Javascript、nodejs、stripe 库中获取 Object 的值

Question

我试图用这个简单的脚本从“客户”对象中获取一个值“状态”：

console.log(JSON.stringify(customer.subscriptions.data.plan.status));

当我执行这个函数时，控制台返回给我：

TypeError: Cannot read property 'data' of undefined

“客户”对象：

customer: {
"object":"customer",
"created":xxxxxx,
"id":"xxxxxxx",
"livemode":false,
"description":null,
"email":"xxxx@xxxx.com",
"shipping":null,
"delinquent":false,
"metadata":{},
"subscriptions":{
    "object":"list",
    "total_count":1,
    "has_more":false,
    "url":"/v1/customers/xxxxxxxxx/subscriptions",
    "data":[{
        "id":"xxxxxxxxx",
        "plan":{
            "interval":"month",
            "name":"xxxxxx",
            "created":xxxxx,
            "amount":xxxxx,
            "currency":"eur",
            "id":"6month",
            "object":"plan",
            "livemode":false,
            "interval_count":6,
            "trial_period_days":null,
            "metadata":{},
            "statement_descriptor":null,
            "statement_description":null},
            "object":"subscription",
            "start":xxxxx,
            "status":"active",
            ...,

请帮我。 谢谢。

Answer 1

错误与数据不匹配。 应该是它无法读取未定义的status 。 这是因为customer确实有subscriptions ，而subscriptions确实有data ，但是您将data视为具有plan属性，而实际上没有。 data指的是一个数组，它的第一个条目有一个plan属性。 另请注意， status不是plan的属性，它是plan是其属性的同一对象的属性。

因此，访问第一个条目的status将是：

customer.subscriptions.data[0].status
// Note -------------------^^^

如果data有后续条目，它们将位于索引 1、2、3 等处。

例子：

 var customer = { "object": "customer", "created": "xxxxxx", "id": "xxxxxxx", "livemode": false, "description": null, "email": "xxxx@xxxx.com", "shipping": null, "delinquent": false, "metadata": {}, "subscriptions": { "object": "list", "total_count": 1, "has_more": false, "url": "/v1/customers/xxxxxxxxx/subscriptions", "data": [ { "id": "xxxxxxxxx", "plan": { "interval": "month", "name": "xxxxxx", "created": "xxxxx", "amount": "xxxxx", "currency": "eur", "id": "6month", "object": "plan", "livemode": false, "interval_count": 6, "trial_period_days": null, "metadata": {}, "statement_descriptor": null, "statement_description": null }, "object": "subscription", "start": "xxxxx", "status": "active" } ] } }; document.body.innerHTML = customer.subscriptions.data[0].status;