I have an object created as follow:

Obj: {
 error:{
  count: 0,
  id :[]
 }
}

I am trying to ad to the list of ids and be able to iterate through the variables in the list of ids, how can you achieve these two goals.

I tried adding using Obj[error].id.push(["123"]), but I can't push more than once. and to view it I tried Obj[error].id and Obj[error].id[0], but it returns the count of the items available in the list instead of the value

I am trying to add values so that it can be

Obj: {
 error:{
  count: 0,
  id :["123","335"]
 }
}

So I would be able to see the values in id and able to add more as needed

CodePudding user response：

This is one way how you can push multiple values into your array:

const da={Obj:{error:{count:0,id:[]}}};

da.Obj.error.id.push(5,2,4,6);

console.log(da);
// and the array alone:
console.log(da.Obj.error.id);

CodePudding user response：

You can do it like this:

const obj = {
    Obj: {
    error:{
      count: 0,
      id :[]
    }
  }
}

const arr = obj.Obj.error.id;
arr.push('123')
arr.push('1234')

for (const i of arr) {
    console.log(i)
}

CodePudding user response：

This will not work:

obj[error].id.push(["123"])

Because error is undefined. You need to either use dot . notation or put quotes around error.

const obj = {
    error: {
        count: 0,
        id: [],
    },
};

// With bracket notation
obj['error'].id.push('123', 'abc');

// With dot notation
obj.error.id.push('321', 'cba');

console.log(obj);

CodePudding user response：

let obj = {
  error: {
    count: 0,
    id: []
  }
};

Adding new elements to the id array

(1) obj["error"].id.push("123")

Notice the quotes around error.
As obj[error] is undefined, hence you have to use quotes around error.

(2) obj.error.id.push("123")

Traversing the id array (using the for loop)

for (let i = 0; i < test.error.id.length; i  ) {
  console.log(obj.error.id[i]);
}