Bir dizideki öğenin bir dizi olup olmadığını kontrol edin javascript/jquery

Question

Aşağıdaki verileri içeren bir JSON'um var, javascript'te işlediğimde, her öğeden gitmek istedim ve NULL ise kaldır Bu, eğer bir dizi ise, alt dizide dolaşmak ve içindeki boş öğeleri bulmak ve kaldırmak istedim. Aşağıdaki kodu denedim, ancak bir öğenin dizinin içinde bir dizi olup olmadığını tanımak başarısız oldu.

KODU:

  for (var key in data) { 

       if (!data[key]) { 
        delete data[key]; 
       }else if(data.key && data.key.constructor === Array){ 
         var subArray = data[key]; 
         for(var subKey in subArray){ 
          if (!data[key]) 
          delete subArray[subKey]; 
        } 
       } 

      } 

JSON:

{ 
    confirmDate : "2016-03-27T23:24:36.338Z", 
    earliestPossibleInhandDate : "2016-03-28T23:24:36.338Z", 
    eventStartTime : null, 
    lastChanceDate : null, 
    latestPossibleInhandDate : null, 
    metas : Array[1], 
    onSaleDate : "2016-03-28T23:24:41.461Z" 
    primaryCategoryId : "114", 
    secondaryGroupings : Array[2], 
    status : "active" 
} 

DÜZENLEME: Modifiye JSON

{ 
    "secondaryGroupings": [{ 
     "groupingId": "720072", 
     "status": "active" 
    }, { 
     "groupingId": null, 
     "status": null 
    }], 
    "secondaryPerformers": [{ 
     "status": null 
    }], 
    "metas": [{}], 
    "status": "active", 
    "primaryCategoryId": "7667", 
    "eventStartTime": null, 
    "lastChanceDate": null, 
    "onSaleDate": "2016-03-29T00:25:56.670Z", 
    "confirmDate": "2016-03-28T00:25:56.670Z", 
    "earliestPossibleInhandDate": "2016-03-29T00:25:56.670Z", 
    "latestPossibleInhandDate": null 
} 

Answer 1

for (var key in data) { 
    // you are deleting all the null values 
    if (!data[key]) { 
     delete data[key]; 
    } 
    // here key is a variable so you must access key as data[key] with bracket notation 
    // also the first check here is a bit redundant as you already deleted the null values 
    else if(data.key && data.key.constructor === Array){ 
      var subArray = data[key]; 
      // you can go over arrays like this but it is better to do a normal for loop or use Array.prototype.forEach because an array is not a key value store 
      for(var subKey in subArray){ 
       if (!data[key]) 
       delete subArray[subKey]; 
     } 
    } 
} 

// something like this.. 
for (var key in data) { 
    if (!data[key]) { 
     delete data[key]; 
    } 
    if (data[key].constructor === Array){ 
     var subArray = data[key]; 
     subArray.forEach(function(item) { 
     // I am not sure what your inner array looks like is it an array of objects? 
      // do stuff with each item 
     }) 
    } 
} 

// this works for your dataset but it ain't pretty 
function stripData(data) { 
    if (Array.isArray(data)){ 
    data.forEach(function(item) { 
     stripData(item); 
    }) 
    return data.filter(function(item) { 
     return Object.keys(item).length > 0; 
    }) 
    } else if (typeof data === 'object') { 
    for (key in data) { 
     if (data[key] === null || data[key].length === 0) delete data[key]; 
     else data[key] = stripData(data[key]); 
    } 
    return data; 
    } 
    for (key in data) { 
    if (data[key].length === 0) delete data[key] 
    } 
    return data; 
} 

data = stripData(stripData(data)) 

Answer 2

function removeNull(obj,key){ 
    var thisIsNull=false; 
    if(key==null||key==undefined){ 
     if(isJson(obj)){ 

      for(var i in obj){ 
       thisIsNull=removeNull(obj,i); 
      } 
     } 
    }else if(key !=null){ 
     if(isJson(obj[key])){ 
      var jsonIsNull=true; 
      for(var i in obj[key]){ 
       if(obj[key][i]!=null){ 
        jsonIsNull=false; 
       } 
       thisIsNull=removeNull(obj[key],i); 
      } 
      if(jsonIsNull){ 
       delete obj[key]; 

       thisIsNull=true;    } 
     }else if(obj[key]==null){ 
      delete obj[key]; 
     }else if(obj[key] instanceof Array){ 
      var arrIsNull=true; 
      for(var i in obj[key]){ 
       if(obj[key][i]!=null){ 
        arrIsNull=false; 
        thisIsNull=removeNull(obj[key],i); 
       }else{ 
        delete obj[key][i]; 
       } 
      } 
      if(arrIsNull){ 
       thisIsNull=true; 
       delete obj[key]; 
       thisIsNull=removeNull(obj); 
      } 
     } 


    } 
    if(thisIsNull){ 
     removeNull(obj); 
    } 
    return thisIsNull; 

} 

function isJson(obj){ 
    var isjson = typeof(obj) == "object" && Object.prototype.toString.call(obj).toLowerCase() == "[object object]" && !obj.length; 
    return isjson; 
} 

Answer 3

function deleteNulls(json) { 
    for (var key in json) { 
     if (Array.isArray(json[key])) { 
      json[key].forEach(function (Obj, index, Array) { 
       for (var property in Obj) { 
        if (Obj[property] == null) { 
         Array.splice(index, 1); 
        } 
       } 
      }); 
     } 
     if (json[key] == null || json[key].length == 0) {  
      delete json[key]; 
     } 
    } 
} 

deleteNulls(myObject);