Javascript JSON中的地址数？

我有下面的JSON（我验证并验证了它是正确的），我正在尝试获取地址的数量。 当我做一个

var位置=req.body

我明白了

{ AddressValidateRequest:
   { '-USERID': 'xxxxxxxxxxx',
     Address: [ [Object], [Object], [Object] ] } }

如何获取地址数

{
    "AddressValidateRequest": {
        "-USERID": "xxxxxxxxxxx",
        "Address": [
            {
                "-ID": "0",
                "FirmName": "firmname",
                "Address1": "address1here",
                "Address2": "13 infinite loop",
                "City": "new york",
                "State": "NY",
                "Zip5": "zip5here",
                "Zip4": "zip4here"
            },
            {
                "-ID": "1",
                "FirmName": "firmhere",
                "Address1": "address1here",
                "Address2": "1 Smith Ct ",
                "City": "San Predo",
                "State": "CA",
                "Zip5": "ziphere",
                "Zip4": "ziphere1"
            },
            {
                "-ID": "1",
                "FirmName": "firmhere",
                "Address1": "address1here",
                "Address2": "12 John Rd ",
                "City": "Newark",
                "State": "PA",
                "Zip5": "ziphere",
                "Zip4": "ziphere1"
            }
        ]
    }
}

这应该可以

req.body.AddressValidateRequest.Address.length

获取特定地址（例如，第一个地址）

获取地址上的字段

req.body.AddressValidateRequest.Address[0].City
// "New York"

实际上，这不起作用，但由于我将req.body分配给位置，所以我执行了“console.log（location.AddressValidateRequest.Address.length）；”它成功了。我尝试了你的建议，但我得到了一个错误：“ReferenceError:request未在Object.handle上定义。请将您的答案更新为location.AddressValidateRequest.Address.length，我会将它标记为已回答，因为您基本上给了我答案。尽管req.body.AddressValidateRequest.Address.length确实有效。对此表示抱歉，您可以随意命名局部变量。我将答案更新为
req
。
req.body.AddressValidateRequest.Address[0].City
// "New York"