How can I delete all objects in a json array by its keyword

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I have json like this:

json = [ 
   { 
      "value1":"3863",
      "value2":"4567"
   },
   { 
      "value1":"4456",
      "value2":"87687"
   },
   { 
      "value1":"98494",
      "value2":"4534"
   },   
]

What I need is to delete value2 so the json would look like:

json = [ 
   { 
      "value1":"3863"
   },
   { 
      "value1":"4456"
   },
   { 
      "value1":"98494"
   },   
]

I have tried to use

for(var i = 0; i < json.length; i++)
{    
  delete json["value2"];   
}

but it doesn´t work.

Is there any way of doing that ?


const json = [ 
   { 
      "value1":"3863",
      "value2":"4567"
   },
   { 
      "value1":"4456",
      "value2":"87687"
   },
   { 
      "value1":"98494",
      "value2":"4534"
   },   
];

json.forEach(item => delete item.value2);

JavaScript, The task is to remove a JSON attribute from the JSON object. To do so This keyword deletes both the value of the property and the property itself. It returns true for all cases and returns false when the property is an own non-configurable property. How to Create a Dropdown List with Array Values using JavaScript ? This code will use onclick () to call a specific function that can delete a JSON element using delete a built-in JavaScript function that use for delete JSON object by providing the index position of an element. You can apply this script to your code, it is a user-friendly program feel free to modify it.


use map.

json = [ 
  { 
     "value1":"3863",
     "value2":"4567"
  },
  { 
     "value1":"4456",
     "value2":"87687"
  },
  { 
     "value1":"98494",
     "value2":"4534"
  }
];

console.log(json.map(({value1}) => ({value1})));

delete operator, The JavaScript delete operator removes a property from an object; if no more true for all cases except when the property is an own non-configurable with the // var keyword, it is marked as "non-configurable" delete nameOther; // return false This holds even if you delete the last element of the array. Subscribe to this blog. Remove all objects from json data which contains a specific keyword


With your current syntax:

for(var i = 0; i < json.length; i++)
{    
  delete json[i].value2;   
}

How to remove a property from a JavaScript object, The semantically correct way to remove a property from an object is to use the delete keyword. concern, you can create a completely new object by copying all the properties from the old, except the one you want to remove:. Arrays in JSON are almost the same as arrays in JavaScript. In JSON, array values must be of type string, number, object, array, boolean or null. In JavaScript, array values can be all of the above, plus any other valid JavaScript expression, including functions, dates, and undefined.


You just have missed i usage in accessing json array elements:

for(var i = 0; i < js.length; i++)
{    
  delete json[i]["value2"];   
}

JavaScript Array Methods, The join() method also joins all array elements into a string. JavaScript arrays are objects, elements can be deleted by using the JavaScript operator delete :  I want to remove all the JSONObject that contains "publishtype": "UNPUBLISHED” and my JSONArray only contains those objects that have "publishtype": "PUBLISHED". I am using classes from org.json library for JSON Parsing.


You forgot the iterator i:

delete json[i]["value2"];

var json = [ 
   { 
      "value1":"3863",
      "value2":"4567"
   },
   { 
      "value1":"4456",
      "value2":"87687"
   },
   { 
      "value1":"98494",
      "value2":"4534"
   },   
];

for(var i = 0; i < json.length; i++) {    
  delete json[i]["value2"];   
}

console.log(json);

JSON_PARSE, The JSON_PARSE function takes a JSON (JavaScript Object Notation) string or A JSON array becomes an IDL LIST variable, unless the TOARRAY keyword is In this case the entire file is read into memory and parsed as a single JSON string. IDLnetURL::Cleanup · IDLnetURL::CloseConnections · IDLnetURL::​Delete  In PHP, you can directly remove an item from an array using unset function. But there is no unset function in JavaScript. But there is another function that will remove a variable. It’s called delete. Removing variables isn’t the only thing it does. It can also remove items from a JSON array in JavaScript. It’s usage is simple.


Google JSON style guide, Reserved JavaScript keywords should be avoided (A list of reserved JavaScript The property name naming rules do not apply when a JSON object is used as a map. A map This includes Unicode booleans, numbers, strings, objects, arrays, and null . Bad - JavaScript function } Consider removing empty or null values. The square brackets [ ] are used to declare JSON array. JSON array are ordered list of values. JSON array can store multiple value types. JSON array can store string, number, boolean, object or other array inside JSON array. In JSON array, values must be separated by comma. Arrays in JSON are almost the same as arrays in JavaScript. e.g.


JavaScript Array splice(): Delete, Insert, and Replace Elements in an , You can replace one element with multiple elements by passing more arguments into the splice() method as follows: languages.splice(2,1,'C#','Swift',  The tags JSON Array contains 100 JSON objects, each containing the tagId and tagName keys. Now, assume that we have a text input somewhere on the page where a user can add a new tag. Now, assume that we have a text input somewhere on the page where a user can add a new tag.


Java Code Examples org.json.JSONObject.remove, This method calls itself recursively until all the * fields have been looked at. JSONObject json = (JSONObject) object; JSONArray names = json.names(); if  I am attempting to remove an element from my database. The element I want to remove is within a JSON object called playerContainer which contains an array named players. This all sits within a table called site_content. I am trying to remove the object based on it's ID. Here is the sample JSON