pushing object to array javascript error stringify

Question

TypeError: Converting circular structure to JSON at JSON.stringify ()

var userInfo = currentUser.children;
      if(currentUser.type ==1){
        userInfo.push(currentUser);
        //console.log(typeof userInfo);
      }

It produce me error Converting circular structure to JSON. How can i come over this please guide.

A circular structure in a JSON means you have strored a Selfreferencing variable inside the Object or just a Selfexecuting functions like a timeout or interval — Tobias Fuchs, Mar 20 '18 at 10:29
Read [this](https://stackoverflow.com/questions/4816099/chrome-sendrequest-error-typeerror-converting-circular-structure-to-json) — standby954, Mar 20 '18 at 10:30
{user_id: 1, social_id: null, type: 1, name: "xys", …}, {user_id: 2, social_id: null, type: 1, name: "xyz", …} ..so ..on — Ricky, Mar 20 '18 at 10:32

score 0 · Answer 1 · answered Mar 20 '18 at 10:39

Your problem is due to something like this:

var oscar = {
  name: 'oscar'
}

var john = {
  name: 'john',
  friend: oscar
};

oscar.friend = john;

console.log(JSON.stringify(oscar));

JSON.stringify navigates the tree defined by the object until it finishes. The problem here is that oscar has a property that references john, and then john references oscar, so the function would enter an infinite loop:

{"name": "oscar", "friend": {"name": "john", "friend": {"name": "oscar", ...

And so on. Always avoid circular references when converting to JSON.

score 0 · Answer 2 · answered Mar 20 '18 at 10:43

You can't push "currentUser" to "userInfo", because userInfo itself is a property of current user, you are trying to reference an object to itself. Just push the data you want to push into an array.

var userInfo = [];
if(currentUser.type ==1){
  userInfo.push(currentUser);
  //console.log(typeof userInfo);
}

pushing object to array javascript error stringify

2 Answers2