What is the best method for transferring a string from JavaScript to a JSON file?

Is there a way to update the value of "JSValue" in my JSON (JSValue) using JavaScript? Specifically, how can I assign JSValue to a variable called Value using JavaScript?

JavaScript

var Value = 1 + 1

JSON

{
  "DATA": [
    {
      "JSValue": "0"
    }
  ]
}

Answer №1

All you have to do is assign the correct value to the respective property.

If your JSON data is stored as a string, you can easily read it using JSON.parse(string), and convert it back into JSON format by using JSON.stringify(json).

//// For Example 1

const jsonData = {
  "DATA": [
    {
      "JSValue": "0"
    }
  ]
};

const updatedValue = 8;

jsonData.DATA[0].JSValue = updatedValue; // Assign the new value here

console.log(jsonData);

//// For Example 2

const jsonData2 = JSON.parse('{"DATA":[{"JSValue":"0"}]}'); // Parsing raw JSON

jsonData2.DATA[0].JSValue = updatedValue; // Assign the new value here

console.log(JSON.stringify(jsonData2)); // Convert back to raw JSON

Answer №2

Create a JSON object and assign it to some data as shown below

let number = 5; let jsonData={"INFO": [{ "NumValue": "0" }]};

Next, you can update the JSON value using:

jsonData["INFO"][0]["NumValue"]= number

This action will change the NumValue to 5 in the JSON data

If you want to retrieve the JSON value, you can use

JSON.stringify(jsonData)

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