如何在量角器中从嵌套的JSON结构中读取数据

let web = JSON.parse(jsondata);
let TestSuite = web["suite1"]["description"] 

这是在控制台中提供数据,但是当我使用它时,

let id = web["suite1"]["specs"]["id"] 

它给出了未定义的。请帮帮我!

{
"suite1": {
    "id": "suite1",
    "description": "Login",
    "fullName": "Login",
    "failedExpectations": [],
    "status": "finished",
    "specs": [
        {
            "id": "spec0",
            "description": "Should able to login into the Distribution management Webpage",
            "fullName": "Login Should able to login into the Distribution management Webpage",
            "failedExpectations": [
                {
                    "matcherName": "",
                    "message": "",
                    "stack": "",
                    "passed": false,
                    "expected": "",
                    "actual": ""
                }
            ],
            "passedExpectations": [],
            "pendingReason": "",
            "started": "2018-09-06T06:57:42.740Z",
            "status": "failed",
            "duration": "7 secs",
            "stopped": "2018-09-06T06:57:49.255Z",
            "browserLogs": []
        }
    ]
} }