JSON-检查深度嵌套的JSON中的属性 [英] JSON - Checking for a property in a deeply nested JSON

问题描述

JSON结构:

{
    "codes":[
        {   
                "id":"1",           
                "code":{                
                    "fname":"S",
                    "lname":"K",
                    "dateofbirth":{
                        "month":"12",
                        "day":"02",
                        "year":"1998"
                    }

            }
        },
        {   
                "id":"2",               
                "code":{                
                    "fname":"M",
                    "lname":"D",
                    "dateofbirth":{
                        "month":"10",
                        "day":"02",
                        "year":"1998"
                    }                 
            }
        }
]
}

我想遍历每个code AND dateofbirth，并提醒month是否为12.如果month为 not 12，则什么都不做.

I want to loop through each code AND dateofbirth and alert if the month is 12. If the month is not 12, then do nothing.

    success: function(data){
        var x;
        for (x = 0; x < data.codes.length; x++){
            var count=0;
            for (property in data.codes[x].code) {
                count++;                                               
            }                   
        }       
    }

如何遍历dateofbirth并检查month的值?

How can I loop through dateofbirth and check for the value of month?

在代码"下具有多个属性(可以是一个对象)的JSON结构示例.因此，我想遍历code内的所有属性，并检查month属性的值，而不是手动检查特定属性.

Example of JSON structure with more than 1 property under 'code' that can be an object. So I want to loop through all the properties within code and check for the value of the month property instead of manually checking for a particular property.

    {
        "codes":[
            {   
                    "id":"1",           
                    "code":{                
                        "fname":"S",
                        "lname":"K",
                        "dateofbirth":{
                            "month":"12",
                            "day":"02",
                            "year":"1998"
                        },
                        "membership":{
                            "month":"12",
                            "day":"12",
                            "year":"2011"
                        }        
                }
            },
            {   
                    "id":"2",               
                    "code":{                
                        "fname":"M",
                        "lname":"D",
                        "dateofbirth":{
                            "month":"10",
                            "day":"02",
                            "year":"1998"
                        },
                        "membership":{
                            "month":"10",
                            "day":"12",
                            "year":"2011"
                        }                
                }
            }
    ]
    }

推荐答案

mycodes=// the object from parsed JSON

for (i=0; i<mycodes.codes.length; i++) {
    if (mycodes.codes[i].code.dateofbirth.month=="12") {
        alert("Code " + mycodes.codes[i].id + " has birth month of 12");
    }
}

顺便说一句，您确实应该将生日存储为数字，而不是字符串.

BTW, you really should store birthdates as numbers, not strings.

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