How to Remove All Null and Empty String Values from an Object

How do I remove all null and empty string values from an object?

You're deleting sjonObj.key, literally. You need to use array access notation:

delete sjonObj[key];

However, that will also delete where value is equal to 0, since you're not using strict comparison. Use === instead:

$.each(sjonObj, function(key, value){
    if (value === "" || value === null){
        delete sjonObj[key];
    }
});

However, this will only walk the object shallowly. To do it deeply, you can use recursion:

(function filter(obj) {
    $.each(obj, function(key, value){
        if (value === "" || value === null){
            delete obj[key];
        } else if (Object.prototype.toString.call(value) === '[object Object]') {
            filter(value);
        } else if ($.isArray(value)) {
            $.each(value, function (k,v) { filter(v); });
        }
    });
})(sjonObj);

var sjonObj = {  "executionMode": "SEQUENTIAL",  "coreTEEVersion": "3.3.1.4_RC8",  "testSuiteId": "yyy",  "testSuiteFormatVersion": "1.0.0.0",  "testStatus": "IDLE",  "reportPath": "",  "startTime": 0,  "durationBetweenTestCases": 20,  "endTime": 0,  "lastExecutedTestCaseId": 0,  "repeatCount": 0,  "retryCount": 0,  "fixedTimeSyncSupported": false,  "totalRepeatCount": 0,  "totalRetryCount": 0,  "summaryReportRequired": "true",  "postConditionExecution": "ON_SUCCESS",  "testCaseList": [    {      "executionMode": "SEQUENTIAL",      "commandList": [              ],      "testCaseList": [              ],      "testStatus": "IDLE",      "boundTimeDurationForExecution": 0,      "startTime": 0,      "endTime": 0,      "label": null,      "repeatCount": 0,      "retryCount": 0,      "totalRepeatCount": 0,      "totalRetryCount": 0,      "testCaseId": "a",      "summaryReportRequired": "false",      "postConditionExecution": "ON_SUCCESS"    },    {      "executionMode": "SEQUENTIAL",      "commandList": [              ],      "testCaseList": [        {          "executionMode": "SEQUENTIAL",          "commandList": [            {              "commandParameters": {                "serverAddress": "www.ggp.com",                "echoRequestCount": "",                "sendPacketSize": "",                "interval": "",                "ttl": "",                "addFullDataInReport": "True",                "maxRTT": "",                "failOnTargetHostUnreachable": "True",                "failOnTargetHostUnreachableCount": "",                "initialDelay": "",                "commandTimeout": "",                "testDuration": ""              },              "commandName": "Ping",              "testStatus": "IDLE",              "label": "",              "reportFileName": "tc_2-tc_1-cmd_1_Ping",              "endTime": 0,              "startTime": 0,              "repeatCount": 0,              "retryCount": 0,              "totalRepeatCount": 0,              "totalRetryCount": 0,              "postConditionExecution": "ON_SUCCESS",              "detailReportRequired": "true",              "summaryReportRequired": "true"            }          ],          "testCaseList": [                      ],          "testStatus": "IDLE",          "boundTimeDurationForExecution": 0,          "startTime": 0,          "endTime": 0,          "label": null,          "repeatCount": 0,          "retryCount": 0,          "totalRepeatCount": 0,          "totalRetryCount": 0,          "testCaseId": "dd",          "summaryReportRequired": "false",          "postConditionExecution": "ON_SUCCESS"        }      ],      "testStatus": "IDLE",      "boundTimeDurationForExecution": 0,      "startTime": 0,      "endTime": 0,      "label": null,      "repeatCount": 0,      "retryCount": 0,      "totalRepeatCount": 0,      "totalRetryCount": 0,      "testCaseId": "b",      "summaryReportRequired": "false",      "postConditionExecution": "ON_SUCCESS"    }  ]};
(function filter(obj) {    $.each(obj, function(key, value){        if (value === "" || value === null){            delete obj[key];        } else if (Object.prototype.toString.call(value) === '[object Object]') {            filter(value);        } else if (Array.isArray(value)) {            value.forEach(function (el) { filter(el); });        }    });})(sjonObj);
console.log(sjonObj)

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How do I remove all null and empty string values from an object in json java android from retrofit?

There are two ways

(1) While inflating the data you can filter these unwanted values
(2) Create a temporary list and add only required values from the main list.
sample code:

List<MainData> tempList = new ArrayList<>();
    for(MainData data :postList)
    {
      if(null!= data.getName() && !data.getName().isEmpty())
       {   tempList.add(data);

        }
    }

And then pass this tempList to the adapter.

Final code would look like this.

 Api api = retrofit.create(Api.class);
Call<List<MainData>> call = api.getData();
call.enqueue(new Callback<List<MainData>>() {
    @Override
    public void onResponse (Call<List<MainData>> call, Response<List<MainData>> response) {
        if (!response.isSuccessful()) {
            Toast.makeText(MainActivity.this, response.code(), Toast.LENGTH_SHORT).show();
            return;
        }
        List<MainData> postList = response.body();

        //sort by ListId
        Collections.sort(postList, (mainData, t1) -> mainData.getListId().compareTo(t1.getListId()));

        // Filter out any items where "name" is blank or null.
      List<MainData> tempList = new ArrayList<>();
    for(MainData data :postList)
    {
      if(null!= data.getName() && !data.getName().isEmpty())
       {   tempList.add(data);

        }
    }
        

        RecyclerViewAdapter recyclerViewAdapter = new RecyclerViewAdapter(MainActivity.this, tempList );
        recyclerView.setAdapter(recyclerViewAdapter);
    }

    @Override
    public void onFailure (Call<List<MainData>> call, Throwable t) {
        Toast.makeText(MainActivity.this, t.getMessage(), Toast.LENGTH_SHORT).show();
    }
});

}

Feel free to ask if something is unclear.

Remove empty elements from an array in Javascript

EDIT: This question was answered almost nine years ago when there were not many useful built-in methods in the Array.prototype.

Now, certainly, I would recommend you to use the filter method.

Take in mind that this method will return you a new array with the elements that pass the criteria of the callback function you provide to it.

For example, if you want to remove null or undefined values:

var array = [0, 1, null, 2, "", 3, undefined, 3,,,,,, 4,, 4,, 5,, 6,,,,];
var filtered = array.filter(function (el) {  return el != null;});
console.log(filtered);

Remove empty & null values from nested object (ES6) - Clean nested Objects

Thanks to Nina Scholz, my enhanced version will be :

cleanObject = function(object) {
    Object
        .entries(object)
        .forEach(([k, v]) => {
            if (v && typeof v === 'object')
                cleanObject(v);
            if (v && 
                typeof v === 'object' && 
                !Object.keys(v).length || 
                v === null || 
                v === undefined ||
                v.length === 0
            ) {
                if (Array.isArray(object))
                    object.splice(k, 1);
                else if (!(v instanceof Date))
                    delete object[k];
            }
        });
    return object;
}

How to Remove All Null and Empty String Values from an Object

How do I remove all null and empty string values from an object?

How do I remove all null and empty string values from an object in json java android from retrofit?

Remove empty elements from an array in Javascript

Remove empty & null values from nested object (ES6) - Clean nested Objects

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