unmarshal

In the JavaScript environment, there is a unmarshal function available that converts a JSON string into an object using the JSON.parse function.

Example implementation of the unmarshal function:

function unmarshal(j) {
  return JSON.parse(j);
}

Example of using the unmarshal function:

var jsonStr = '{"name":"John","age":30,"city":"New York"}';
var obj = unmarshal(jsonStr);
console.log(obj); // { name: "John", age: 30, city: "New York" }

In this example, the unmarshal function takes the JSON string jsonStr and uses the JSON.parse function to convert the string into an object. The result of the function will be an object containing the data from the JSON string.