jQuery json空对象筛选替换

Requirement:

       一个json object，并且可能包含一些空值或者空字符串，在页面显示的时候希望遇到空值显示“N/A”，但是有一部分值是允许空值的。因此希望通过筛选将空值设为“N/A”.例如希望学生的“age”和“score”如果为空显示“N/A”，而“sex”或者“comment”为空则不做处理。

 

var student = {            "name" : "Guo",            "sex" : "",            "age" : "",            "num ": 01,            "scores" : [                    {                        "subject" : "English",                        "score" : 50,                        "comment" : ""                    },                    {                        "subject" : "Computer",                        "score" : "",                        "comment" : "absent"                    }                ]                    };        var exclude = ["sex", "comment"];                // method 1 to validate obj        validateObj1 = function(obj, excluded){            var value;            for(var key in obj){                value = obj[key];                if($.isArray(value)){                    obj = validateArray1(obj, key, excluded);                }else if(($.inArray(key, excluded) == -1) && ($.isBlank(value))){                    obj[key] = "N/A";                }            }                        return obj;                }                validateArray1 = function(obj, key, excluded){            var subValue;            for(var i = 0, length = obj[key].length; i < length; i++){                for(var subKey in obj[key][i]){                    subValue = obj[key][i][subKey];                    if(($.inArray(subKey, excluded) == -1) && ($.isBlank(subValue))){                        obj[key][i][subKey] = "N/A";                    }                }            }                        return obj;        }                // method 2 to validate obj        validateObj2 = function(obj, excluded){            $.each(obj ,function(key, value){                if($.isArray(value)){                    obj = validateArray2(obj, key, excluded);                }else if(isInvalid(key, value, excluded)){                    obj[key] = "N/A";                }            });                        return obj;        }                validateArray2 = function(obj, key, excluded){            for(var i = 0, length = obj[key].length; i < length; i++){                $.each(obj[key][i] ,function(subKey, subValue){                    if(isInvalid(subKey, subValue, excluded)){                        obj[key][i][subKey] = "N/A";                    }                });            }                        return obj;        }                isInvalid = function(key, value, excluded){            return (($.inArray(key, excluded) == -1) && ($.isBlank(value))) ? true : false;        }                $.isBlank = function(obj){            return(!obj || $.trim(obj) === "");        };

Method 1 结果

 

Method 2 结果