Question 109848 in Json Question posted in
Our archive of expertly curated questions and answers provides insights and solutions to common problems related to this popular data interchange format. From parsing and manipulating JSON data to integrating it with various programming languages and web services, our archive has got you covered. Start exploring today and take your JSON skills to the next level

remove key(s) from a json array under javascript

Need to remove key(s) from a json array under javascript (jquery).
Looks like my code is wong although it was working in my Chrome console.
Your help is the most welcome.
Jacques

function test() {
  var json = {
    "ID": "2196",
    "VERSION": "1-2022",
    "FILE": "2196.docx"
  };
  json = JSON.stringify(json)
  console.log("json " + json);

  delete json['FILE'];
  console.log("json " + json);
  return;
}

test();
Tags:

2

Answers


  1. 0

    You should not stringify the object before removing the key.

    function test() {
  var json = {
    "ID": "2196",
    "VERSION": "1-2022",
    "FILE": "2196.docx"
  };
  // stringify to show in console as string
  json = JSON.stringify(json)
  console.log("json " + json);

  // convert back to object so you can remove the key
  json = JSON.parse(json);
  delete json['FILE'];
  
  // stringify to show new object in console as string
  json = JSON.stringify(json);
  console.log("json " + json);
  return;
}

test();
    Login or Signup to reply.
  2. 0

    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"], " ")
);
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search