我有不同子对象的JSON（扫描），如下所示。我正在尝试用javascript打印子对象的内容，它给了我一个输出＆＃39; undefined＆＃39;。
JS小提琴链接：https://jsfiddle.net/jpavanaryan/sz5gkesh/
alert(jsonobj.scans[0]);
var jsonobj={
"scan_id": "004d396404ae9343e1479689c05d02290babdf14f502b3437e247e02e74ba803-1490201685",
"resource": "http://helenphilwarnes.com/ymal/image.htm",
"url": "http://helenphilwarnes.com/ymal/image.htm",
"response_code": 1,
"scan_date": "2017-03-22 16:54:45",
"permalink": "https://www.virustotal.com/url/004d396404ae9343e1479689c05d02290babdf14f502b3437e247e02e74ba803/analysis/1490201685/",
"verbose_msg": "Scan finished, scan information embedded in this object",
"filescan_id": "fb2d9f058c2010c57f86a05ae33d282f33e3825290c66b8b120cd177416c6bdf-1489446422",
"positives": 15,
"total": 64,
"scans": {
"CLEAN MX": {
"detected": false,
"result": "clean site"
},
"Rising": {
"detected": false,
"result": "clean site"
},
"OpenPhish": {
"detected": true,
"result": "phishing site"
},
"VX Vault": {
"detected": false,
"result": "clean site"
},
"ZDB Zeus": {
"detected": false,
"result": "clean site"
},
"ZCloudsec": {
"detected": false,
"result": "clean site"
},
"PhishLabs": {
"detected": false,
"result": "unrated site"
},
"Zerofox": {
"detected": false,
"result": "clean site"
},
"K7AntiVirus": {
"detected": false,
"result": "clean site"
},
"SecureBrain": {
"detected": false,
"result": "clean site"
},
"Quttera": {
"detected": false,
"result": "clean site"
},
"AegisLab WebGuard": {
"detected": false,
"result": "clean site"
},
"MalwareDomainList": {
"detected": false,
"result": "clean site",
"detail": "http://www.malwaredomainlist.com/mdl.php?search=helenphilwarnes.com"
},
"ZeusTracker": {
"detected": false,
"result": "clean site",
"detail": "https://zeustracker.abuse.ch/monitor.php?host=helenphilwarnes.com"
},
"zvelo": {
"detected": false,
"result": "clean site"
},
"Google Safebrowsing": {
"detected": true,
"result": "phishing site"
},
"FraudScore": {
"detected": false,
"result": "clean site"
},
"Kaspersky": {
"detected": true,
"result": "phishing site"
},
"BitDefender": {
"detected": true,
"result": "malware site"
},
"Opera": {
"detected": true,
"result": "malicious site"
},
"Certly": {
"detected": false,
"result": "clean site"
},
"G-Data": {
"detected": true,
"result": "phishing site"
},
"C-SIRT": {
"detected": false,
"result": "clean site"
},
"CyberCrime": {
"detected": false,
"result": "clean site"
},
"Websense ThreatSeeker": {
"detected": false,
"result": "clean site"
},
"MalwarePatrol": {
"detected": false,
"result": "clean site"
},
"Webutation": {
"detected": false,
"result": "clean site"
},
"Trustwave": {
"detected": true,
"result": "malicious site"
},
"Web Security Guard": {
"detected": false,
"result": "clean site"
},
"desenmascara.me": {
"detected": false,
"result": "clean site"
},
"ADMINUSLabs": {
"detected": false,
"result": "clean site"
},
"Malwarebytes hpHosts": {
"detected": false,
"result": "clean site"
},
"Dr.Web": {
"detected": false,
"result": "clean site"
},
"AlienVault": {
"detected": false,
"result": "clean site"
},
"Emsisoft": {
"detected": true,
"result": "phishing site"
},
"Malc0de Database": {
"detected": false,
"result": "clean site",
"detail": "http://malc0de.com/database/index.php?search=helenphilwarnes.com"
},
"malwares.com URL checker": {
"detected": false,
"result": "clean site"
},
"Phishtank": {
"detected": true,
"result": "phishing site"
},
"Malwared": {
"detected": false,
"result": "clean site"
},
"Avira": {
"detected": true,
"result": "phishing site"
},
"StopBadware": {
"detected": false,
"result": "unrated site"
},
"Antiy-AVL": {
"detected": false,
"result": "clean site"
},
"SCUMWARE.org": {
"detected": true,
"result": "malware site"
},
"FraudSense": {
"detected": false,
"result": "clean site"
},
"Comodo Site Inspector": {
"detected": false,
"result": "clean site"
},
"Malekal": {
"detected": false,
"result": "clean site"
},
"ESET": {
"detected": true,
"result": "phishing site"
},
"Sophos": {
"detected": true,
"result": "malicious site"
},
"Yandex Safebrowsing": {
"detected": false,
"result": "clean site",
"detail": "http://yandex.com/infected?l10n=en&url=http://helenphilwarnes.com/ymal/image.htm"
},
"Spam404": {
"detected": false,
"result": "clean site"
},
"Nucleon": {
"detected": false,
"result": "clean site"
},
"Malware Domain Blocklist": {
"detected": false,
"result": "clean site"
},
"Blueliv": {
"detected": false,
"result": "clean site"
},
"Netcraft": {
"detected": true,
"result": "malicious site"
},
"AutoShun": {
"detected": false,
"result": "unrated site"
},
"ThreatHive": {
"detected": false,
"result": "clean site"
},
"ParetoLogic": {
"detected": false,
"result": "clean site"
},
"Tencent": {
"detected": false,
"result": "clean site"
},
"URLQuery": {
"detected": false,
"result": "unrated site"
},
"Sucuri SiteCheck": {
"detected": false,
"result": "clean site"
},
"Fortinet": {
"detected": true,
"result": "phishing site"
},
"ZeroCERT": {
"detected": false,
"result": "clean site"
},
"Baidu-International": {
"detected": false,
"result": "clean site"
},
"securolytics": {
"detected": false,
"result": "clean site"
}
}
};
答案 0 :(得分：1)
scans是另一个对象，您正在尝试引用索引。因此，当您执行scans[0]时，它实际上是在"0"内查找不存在的密钥scans。使用密钥：
jsonobj.scans["VX Vault"].result
不知道钥匙？然后使用for in循环迭代：
for (var key in jsonobj.scans) {
console.log(jsonobj.scans[key]);
}
答案 1 :(得分：0)
属性jsonobj.scans是一个关联数组。每个扫描必须通过名称jsonobj.scans['scanname']访问，或者可以使用for ... in构造进行枚举。
var jsonobj={
"scan_id": "004d396404ae9343e1479689c05d02290babdf14f502b3437e247e02e74ba803-1490201685",
"resource": "http://helenphilwarnes.com/ymal/image.htm",
"url": "http://helenphilwarnes.com/ymal/image.htm",
"response_code": 1,
"scan_date": "2017-03-22 16:54:45",
"permalink": "https://www.virustotal.com/url/004d396404ae9343e1479689c05d02290babdf14f502b3437e247e02e74ba803/analysis/1490201685/",
"verbose_msg": "Scan finished, scan information embedded in this object",
"filescan_id": "fb2d9f058c2010c57f86a05ae33d282f33e3825290c66b8b120cd177416c6bdf-1489446422",
"positives": 15,
"total": 64,
"scans": {
"CLEAN MX": {
"detected": false,
"result": "clean site"
},
"Rising": {
"detected": false,
"result": "clean site"
},
"OpenPhish": {
"detected": true,
"result": "phishing site"
},
"VX Vault": {
"detected": false,
"result": "clean site"
},
"ZDB Zeus": {
"detected": false,
"result": "clean site"
},
"ZCloudsec": {
"detected": false,
"result": "clean site"
},
"PhishLabs": {
"detected": false,
"result": "unrated site"
},
"Zerofox": {
"detected": false,
"result": "clean site"
},
"K7AntiVirus": {
"detected": false,
"result": "clean site"
},
"SecureBrain": {
"detected": false,
"result": "clean site"
},
"Quttera": {
"detected": false,
"result": "clean site"
},
"AegisLab WebGuard": {
"detected": false,
"result": "clean site"
},
"MalwareDomainList": {
"detected": false,
"result": "clean site",
"detail": "http://www.malwaredomainlist.com/mdl.php?search=helenphilwarnes.com"
},
"ZeusTracker": {
"detected": false,
"result": "clean site",
"detail": "https://zeustracker.abuse.ch/monitor.php?host=helenphilwarnes.com"
},
"zvelo": {
"detected": false,
"result": "clean site"
},
"Google Safebrowsing": {
"detected": true,
"result": "phishing site"
},
"FraudScore": {
"detected": false,
"result": "clean site"
},
"Kaspersky": {
"detected": true,
"result": "phishing site"
},
"BitDefender": {
"detected": true,
"result": "malware site"
},
"Opera": {
"detected": true,
"result": "malicious site"
},
"Certly": {
"detected": false,
"result": "clean site"
},
"G-Data": {
"detected": true,
"result": "phishing site"
},
"C-SIRT": {
"detected": false,
"result": "clean site"
},
"CyberCrime": {
"detected": false,
"result": "clean site"
},
"Websense ThreatSeeker": {
"detected": false,
"result": "clean site"
},
"MalwarePatrol": {
"detected": false,
"result": "clean site"
},
"Webutation": {
"detected": false,
"result": "clean site"
},
"Trustwave": {
"detected": true,
"result": "malicious site"
},
"Web Security Guard": {
"detected": false,
"result": "clean site"
},
"desenmascara.me": {
"detected": false,
"result": "clean site"
},
"ADMINUSLabs": {
"detected": false,
"result": "clean site"
},
"Malwarebytes hpHosts": {
"detected": false,
"result": "clean site"
},
"Dr.Web": {
"detected": false,
"result": "clean site"
},
"AlienVault": {
"detected": false,
"result": "clean site"
},
"Emsisoft": {
"detected": true,
"result": "phishing site"
},
"Malc0de Database": {
"detected": false,
"result": "clean site",
"detail": "http://malc0de.com/database/index.php?search=helenphilwarnes.com"
},
"malwares.com URL checker": {
"detected": false,
"result": "clean site"
},
"Phishtank": {
"detected": true,
"result": "phishing site"
},
"Malwared": {
"detected": false,
"result": "clean site"
},
"Avira": {
"detected": true,
"result": "phishing site"
},
"StopBadware": {
"detected": false,
"result": "unrated site"
},
"Antiy-AVL": {
"detected": false,
"result": "clean site"
},
"SCUMWARE.org": {
"detected": true,
"result": "malware site"
},
"FraudSense": {
"detected": false,
"result": "clean site"
},
"Comodo Site Inspector": {
"detected": false,
"result": "clean site"
},
"Malekal": {
"detected": false,
"result": "clean site"
},
"ESET": {
"detected": true,
"result": "phishing site"
},
"Sophos": {
"detected": true,
"result": "malicious site"
},
"Yandex Safebrowsing": {
"detected": false,
"result": "clean site",
"detail": "http://yandex.com/infected?l10n=en&url=http://helenphilwarnes.com/ymal/image.htm"
},
"Spam404": {
"detected": false,
"result": "clean site"
},
"Nucleon": {
"detected": false,
"result": "clean site"
},
"Malware Domain Blocklist": {
"detected": false,
"result": "clean site"
},
"Blueliv": {
"detected": false,
"result": "clean site"
},
"Netcraft": {
"detected": true,
"result": "malicious site"
},
"AutoShun": {
"detected": false,
"result": "unrated site"
},
"ThreatHive": {
"detected": false,
"result": "clean site"
},
"ParetoLogic": {
"detected": false,
"result": "clean site"
},
"Tencent": {
"detected": false,
"result": "clean site"
},
"URLQuery": {
"detected": false,
"result": "unrated site"
},
"Sucuri SiteCheck": {
"detected": false,
"result": "clean site"
},
"Fortinet": {
"detected": true,
"result": "phishing site"
},
"ZeroCERT": {
"detected": false,
"result": "clean site"
},
"Baidu-International": {
"detected": false,
"result": "clean site"
},
"securolytics": {
"detected": false,
"result": "clean site"
}
}
};
// access a single scan by key
console.log(jsonobj.scans['securolytics'].result);
// enumerate all scans
for (var scan in jsonobj.scans) {
console.log(scan + ': ' + jsonobj.scans[scan].result);
}