javascript - 获取对象内数组内对象的属性

Question

我有一个对象，当我使用 console.log 打印它而不进行 stringify 时，它看起来像这样:

SuiteStats {
type: 'suite',
start: 2019 - 06 - 04T13: 04: 10.640Z,
_duration: 6262,
uid: 'District1',
cid: '0-0',
title: 'District',
fullTitle: undefined,
tests: [],
hooks: [],
suites:
[SuiteStats {
        type: 'suite',
        start: 2019 - 06 - 04T13: 04: 15.271Z,
        _duration: 1621,
        uid: 'Create District5',
        cid: '0-0',
        title: '@sanity, @sanityUpgraded, @debug: Create District',
        fullTitle: undefined,
        tests: [Array],
        hooks: [],
        suites: [],
        end: 2019 - 06 - 04T13: 04: 16.892Z
    }
],
end: 2019 - 06 - 04T13: 04: 16.902Z

}

现在我想获取 SuiteStats 内套件内的 SuiteStats 标题(其值为:'@sanity、@sanityUpgraded、@debug:创建区')

console.log(SuiteStats.suites[0].title

不起作用，它退出并显示有关“TypeError:无法读取未定义的属性“标题””的错误

我尝试了其他方法但没有成功，例如:

console.log(SuiteStats.suites[0].SuiteStats.title

那么我做错了什么，为什么这个对象与我过去使用过的另一个对象不同？

这是对象在字符串化后的样子:

{
"type": "suite",
"start": "2019-06-04T13:29:25.385Z",
"_duration": 5575,
"uid": "District1",
"cid": "0-0",
"title": "District",
"tests": [],
"hooks": [],
"suites": [{
        "type": "suite",
        "start": "2019-06-04T13:29:29.737Z",
        "_duration": 1220,
        "uid": "Create District5",
        "cid": "0-0",
        "title": "@sanity, @sanityUpgraded, @debug: Create District",
        "tests": [{
                "type": "test",
                "start": "2019-06-04T13:29:29.745Z",
                "_duration": 369,
                "uid": "I am logged in as admin user \"ufedadmin\"7",
                "cid": "0-0",
                "title": "I am logged in as admin user \"ufedadmin\"",
                "output": [],
                "state": "passed",
                "end": "2019-06-04T13:29:30.114Z"
            }, {
                "type": "test",
                "start": "2019-06-04T13:29:30.122Z",
                "_duration": 523,
                "uid": "I create or overwrite District \"Argentina3\" with code \"Argentina3\"8",
                "cid": "0-0",
                "title": "I create or overwrite District \"Argentina3\" with code \"Argentina3\"",
                "output": [],
                "state": "passed",
                "end": "2019-06-04T13:29:30.645Z"
            }, {
                "type": "test",
                "start": "2019-06-04T13:29:30.667Z",
                "_duration": 283,
                "uid": "I expect that district \"Argentina3\" was created9",
                "cid": "0-0",
                "title": "I expect that district \"Argentina3\" was created",
                "output": [],
                "state": "passed",
                "end": "2019-06-04T13:29:30.950Z"
            }
        ],
        "hooks": [],
        "suites": [],
        "end": "2019-06-04T13:29:30.957Z"
    }
],
"end": "2019-06-04T13:29:30.960Z"

}

Answer 1

看起来工作正常:

var data = {
"type": "suite",
"start": "2019-06-04T13:29:25.385Z",
"_duration": 5575,
"uid": "District1",
"cid": "0-0",
"title": "District",
"tests": [],
"hooks": [],
"suites": [{
        "type": "suite",
        "start": "2019-06-04T13:29:29.737Z",
        "_duration": 1220,
        "uid": "Create District5",
        "cid": "0-0",
        "title": "@sanity, @sanityUpgraded, @debug: Create District",
        "tests": [{
                "type": "test",
                "start": "2019-06-04T13:29:29.745Z",
                "_duration": 369,
                "uid": "I am logged in as admin user \"ufedadmin\"7",
                "cid": "0-0",
                "title": "I am logged in as admin user \"ufedadmin\"",
                "output": [],
                "state": "passed",
                "end": "2019-06-04T13:29:30.114Z"
            }, {
                "type": "test",
                "start": "2019-06-04T13:29:30.122Z",
                "_duration": 523,
                "uid": "I create or overwrite District \"Argentina3\" with code \"Argentina3\"8",
                "cid": "0-0",
                "title": "I create or overwrite District \"Argentina3\" with code \"Argentina3\"",
                "output": [],
                "state": "passed",
                "end": "2019-06-04T13:29:30.645Z"
            }, {
                "type": "test",
                "start": "2019-06-04T13:29:30.667Z",
                "_duration": 283,
                "uid": "I expect that district \"Argentina3\" was created9",
                "cid": "0-0",
                "title": "I expect that district \"Argentina3\" was created",
                "output": [],
                "state": "passed",
                "end": "2019-06-04T13:29:30.950Z"
            }
        ],
        "hooks": [],
        "suites": [],
        "end": "2019-06-04T13:29:30.957Z"
    }
],
"end": "2019-06-04T13:29:30.960Z"
};

console.log(data.suites[0].title);