delete operator is used to remove an object property.

delete operator does not returns the new object, only returns a boolean: true or false.

In the other hand, after interpreter executes var updatedjsonobj = delete myjsonobj['otherIndustry']; , updatedjsonobj variable will store a boolean value.

How to remove Json object specific key and its value ?

You just need to know the property name in order to delete it from the object's properties.

delete myjsonobj['otherIndustry'];

let myjsonobj = {
  "employeeid": "160915848",
  "firstName": "tet",
  "lastName": "test",
  "email": "test@email.com",
  "country": "Brasil",
  "currentIndustry": "aaaaaaaaaaaaa",
  "otherIndustry": "aaaaaaaaaaaaa",
  "currentOrganization": "test",
  "salary": "1234567"
}
delete myjsonobj['otherIndustry'];
console.log(myjsonobj);

If you want to remove a key when you know the value you can use Object.keys function which returns an array of a given object's own enumerable properties.

let value="test";
let myjsonobj = {
      "employeeid": "160915848",
      "firstName": "tet",
      "lastName": "test",
      "email": "test@email.com",
      "country": "Brasil",
      "currentIndustry": "aaaaaaaaaaaaa",
      "otherIndustry": "aaaaaaaaaaaaa",
      "currentOrganization": "test",
      "salary": "1234567"
}
Object.keys(myjsonobj).forEach(function(key){
  if (myjsonobj[key] === value) {
    delete myjsonobj[key];
  }
});
console.log(myjsonobj);

What you call your "JSON Object" is really a JSON Array of Objects. You have to iterate over each and delete each member individually:

for(var i = 0; i < jsonArr.length; i++) {
    delete jsonArr[i]['YYY'];
}

JSON.stringify has an often overlooked parameter called the replacer. It can accept an array of key names to include in the json output:

 JSON.stringify(data, ["ID","VERSION"], " ");  // FILE is excluded 

Snippet

Run the snippet to see the output with and without using the replacer.

let data = {
  "ID": "2196",
  "VERSION": "1-2022",
  "FILE": "2196.docx"
};

console.log("Without replacer: ",
  JSON.stringify(data, null, " ")
);

console.log("Using replacer: ",
  JSON.stringify(data, ["ID","VERSION"], " ")
);

// make array
$array = json_decode($your_json_string, true);

// loop through array
foreach($array as $key => $item){
       // unset them
       unset($array[$key]["phonenumber"]);
}

// make json again
$json_string_modified = json_encode($array);

OR using reference

// make array
$array = json_decode($your_json_string, true);

// loop through array using reference
foreach($array as &$item){

      // unset specific key
      unset($item["phonenumber"]);

}

// unset reference
unset($item);

// make json again
// you may remove JSON_PRETTY_PRINT flag, I kept it just to see o/p
$json_string_modified = json_encode($array,JSON_PRETTY_PRINT);

delete operator is used to remove an object property.

delete operator does not returns the new object, only returns a boolean: true or false.

In the other hand, after interpreter executes var updatedjsonobj = delete myjsonobj['otherIndustry']; , updatedjsonobj variable will store a boolean value.

How to remove Json object specific key and its value ?

You just need to know the property name in order to delete it from the object's properties.

delete myjsonobj['otherIndustry'];

let myjsonobj = {
  "employeeid": "160915848",
  "firstName": "tet",
  "lastName": "test",
  "email": "[email protected]",
  "country": "Brasil",
  "currentIndustry": "aaaaaaaaaaaaa",
  "otherIndustry": "aaaaaaaaaaaaa",
  "currentOrganization": "test",
  "salary": "1234567"
}
delete myjsonobj['otherIndustry'];
console.log(myjsonobj);

If you want to remove a key when you know the value you can use Object.keys function which returns an array of a given object's own enumerable properties.

let value="test";
let myjsonobj = {
      "employeeid": "160915848",
      "firstName": "tet",
      "lastName": "test",
      "email": "[email protected]",
      "country": "Brasil",
      "currentIndustry": "aaaaaaaaaaaaa",
      "otherIndustry": "aaaaaaaaaaaaa",
      "currentOrganization": "test",
      "salary": "1234567"
}
Object.keys(myjsonobj).forEach(function(key){
  if (myjsonobj[key] === value) {
    delete myjsonobj[key];
  }
});
console.log(myjsonobj);

I wouldn't recommend using regex for such thing, the better choice would be using a library for parsing json, remove the value, and then turn it into a string again.

    JSONObject jsonObject = new JSONObject(input);
    jsonObject.getJSONObject("expressions").remove("storyId");
    String output = jsonObject.toString();

if you really want to use regex, you can use the follow

    jsonString.replaceAll("(\\\"storyId\\\"|\\'storyId\\')\\s*:\\s*(\\\"[^\\\"]*\\\"|'[^\\\"]*')\\s*,?", "");

but just make sure that storyId is really a string, otherwise this regex won't work.

edit: updated my answer, if you want a function that get the parameter to remove with regex,

void replaceAllKeys(String keyName, String jsonAsString) {
    String pattern = String.format("(\\\"%s\\\"|\\'%s\\')\\s*:\\s*(\\\"[^\\\"]*\\\"|'[^\\\"]*')\\s*,?", keyName, keyName);
    return jsonAsString.replaceAll(pattern, "");
}

Damn, forget about jQuery! This is a pure javascript task.

• To loop through an Array, use for (var i=0; i<array.length; i++), to loop over an Object use for (var i in object)
• To delete an array entry, use splice(). To delete an object attribute, use delete object[key];.
• To filter an Array, in modern javascript versions you can use filter() with a callback function for every entry; it creates a new Array. There is no such (native) method for objects.

You may find some libraries with helpful utility functions, like underscore. But to learn JS, it may be better to do it with native methods first.

jsonObj.getJSONArray("Data").get(0).remove("status);

#Updated Code-breakdown:

JSONObject obj= (JSONObject) jsonObj.getJSONArray("Data").get(0);
   obj.remove("status");

   JSONArray newArr=new JSONArray();
   newArr.put(obj);
   jsonObj.put("Data", newArr);

It should do your work, haven't tested though. First, your Data is JSONArray, retrieving that by jsonObj.getJSONArray("Data"), then access the array with get(0)[assuming, your array will contain only one entry like your example] and finally, removing that key by remove method.