Creating a new array [] in json and pushing data using js

Question

needed some help, so I have a json in this format

{
    "objs": {
        "block": [
            {"long": "value1"}
        ],
        "block1": [
            {"long": "value2"}
        ],
        "nameofblock": [
            {"long": "thisisthevalueoflonginjson"}
        ]
    }
}

Now I need to add a new array using js, I am not allowed to change the structure of the JSON so now, in my js I have something like this

let myBlock = "name_of_block";
let longData = "data_inside_the_block";

Now using these variables a new block needs to be created in the existing JS file using the variables in JS

so once these are added the JSON must look something like this

{
    "objs": {
        "block": [
            {"long": "value1"}
        ],
        "block1": [
            {"long": "value2"}
        ],
        "nameofblock": [
            {"long": "thisisthevalueoflonginjson"}
        ],
        "name_of_block": [
            {"long": "data_inside_the_block"}
        ]
    }
}

Thanks for reading, I have tried in Discord, but still couldn't figure it out

Answer 1

Something as simple as this should do the trick:

myJSON.objs[myBlock] = [{"long": longData}];

Where myJSON is the object you want to attach it to.

See the example below:

 const myJSON = { "objs": { "block": [ {"long": "value1"} ], "block1": [ {"long": "value2"} ], "nameofblock": [ {"long": "thisisthevalueoflonginjson"} ] } }; let myBlock = "name_of_block"; let longData = "data_inside_the_block"; myJSON.objs[myBlock] = [{"long": longData}]; console.log(myJSON);

Answer 2

JSON structure is same with JS Object.

so you can do it like below.

function createBlock = (longData) => [{"long":longData}];
jsonObj.objs[myBlock] = createBlock(longData);

Answer 3

let x ={
    "objs": {
        "block": [
            {"long": "value1"}
        ],
        "block1": [
            {"long": "value2"}
        ],
        "nameofblock": [
            {"long": "thisisthevalueoflonginjson"}
        ],
        "name_of_block": [
            {"long": "data_inside_the_block"}
        ]
    }
}


x.objs.newProperty= 'New value'

console.log(x) --->
{
  objs: {
    block: [ [Object] ],
    block1: [ [Object] ],
    nameofblock: [ [Object] ],
    name_of_block: [ [Object] ],
    newProperty: 'new Value'
  }
}
``