JSON层次结构，如何获取元素？

$("#loginsubmit").live("click", function() { 
    var request = new Request(); 
    request.service = "http://88.80.223.163:8080/lumiin-service/lumiin/control/eventmap/1" ; 
    RequestHandler(request,displayData); 
}); 

function displayData(data) { 
    //alert(data.contents.ownerId); 
    var cont = data.contents; 
    $("#mono").html(''+cont.id); 
}

我正在使用上面的代码段来获取ID，这工作正常...我如何得到firstName？JSON层次结构，如何获取元素？

对象：

{ 
    "id": 1, 
    "eventId": { 
    "URL": "web", 
    "location": "web", 
    "url": "web", 
    "id": 54, 
    "type": { 
     "name": "Meeting", 
     "id": 1, 
     "isDeleted": "N", 
     "description": "Meeting" 
    }, 
    "abteilung": { 
     "id": 165, 
     "code": "web123", 
     "isDeleted": null, 
     "domainId": 0, 
     "parentId": 164, 
     "description": null 
    }, 
    "eventName": "Tanvi", 
    "place": "web", 
    "startDate": 1335830400000, 
    "endDate": 1337558400000, 
    "prospectId": null, 
    "person": "web", 
    "isDeleted": "N", 
    "countryId": { 
     "name": "CH", 
     "id": 1, 
     "isDeleted": "N", 
     "description": "Switzerland" 
    }, 
    "followUp": null, 
    "budget": 0, 
    "description": "web" 
    }, 
    "ownerId": { 
    "id": 67, 
    "firstName": "web123", 
    "localOrg": null, 
    "industryTypeId": null, 
    "memeber": false, 
    "profileType": "Manager", 
    "emailId": "web123", 
    "abteilung": { 
     "id": 165, 
     "code": "web123", 
     "isDeleted": null, 
     "domainId": 0, 
     "parentId": 164, 
     "description": null 
    }, 
    "userCode": "web123", 
    "authenticatedAccess": -1, 
    "uuid": null, 
    "lastName": "web123", 
    "isDeleted": "N", 
    "passWord": "web123", 
    "fullName": "web123,web123", 
    "status": 0 
    }, 
    "prospectId": { 
    "id": 303, 
    "firstName": "web123", 
    "emailId": "[email protected]", 
    "ownerId": { 
     "id": 67, 
     "firstName": "web123", 
     "localOrg": null, 
     "industryTypeId": null, 
     "memeber": false, 
     "profileType": "Manager", 
     "emailId": "web123", 
     "abteilung": { 
     "id": 165, 
     "code": "web123", 
     "isDeleted": null, 
     "domainId": 0, 
     "parentId": 164, 
     "description": null 
     }, 
     "userCode": "web123", 
     "authenticatedAccess": -1, 
     "uuid": null, 
     "lastName": "web123", 
     "isDeleted": "N", 
     "passWord": "web123", 
     "fullName": "web123,web123", 
     "status": 0 
    }, 
    "abteilung": { 
     "id": 165, 
     "code": "web123", 
     "isDeleted": null, 
     "domainId": 0, 
     "parentId": 164, 
     "description": null 
    }, 
    "startDate": 1335744000000, 
    "endDate": 1337904000000, 
    "statusId": { 
     "name": "New", 
     "id": 1, 
     "isDeleted": "N", 
     "description": "New" 
    }, 
    "company": "company", 
    "lastName": "web123", 
    "isDeleted": "N", 
    "yearofBirth": null, 
    "annualRevenue": 0, 
    "nationalityId": { 
     "name": "CH", 
     "id": 1, 
     "isDeleted": "N", 
     "description": "Switzerland" 
    }, 
    "titleId": { 
     "name": "Mr", 
     "id": 1, 
     "isDeleted": "N", 
     "description": "Mr" 
    }, 
    "maritalstatusId": null, 
    "residencyId": null, 
    "languageId": null, 
    "priorityId": { 
     "name": "Low", 
     "id": 1, 
     "isDeleted": "N", 
     "description": "Low" 
    }, 
    "genderId": { 
     "name": "Male", 
     "id": 1, 
     "isDeleted": "N", 
     "description": "Male" 
    } 
    }, 
    "isDeleted": "N" 
}

来源

2012-08-12 user1593175

如何访问对象的属性解释在MDN JavaScript指南中：https：//developer.mozilla.org/en/JavaScript/Guide/Working_with _Objects。我们不能针对每种可能的对象结构都有这样的问题...... – 2012-08-12 12:24:43

的firstName是prospectId对象的属性，你可以这样阅读：

var firstName = data.prospectId.firstName; 
var lastName = data.prospectId.lastName;

Fiddle

来源

2012-08-12 12:01:21 undefined

如果数组中有多个值，您可以使用..firstname [1]来获取正确的值吗？ – Dan 2012-08-12 12:03:00

@ErmSo是的，'data.prospectId.firstName [1];' – undefined 2012-08-12 12:05:00

对不起，它不工作。 – user1593175 2012-08-12 12:05:35

JSON层次结构，如何获取元素？

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