Answers for "JSON parse is used for"

json.parse with function

const text =
  '{"name":"John", "age":"function () {return 
  30;}", "city":"New York"}';

  const obj = JSON.parse(text);
obj.age = eval("(" + obj.age + ")");

  
document.getElementById("demo").innerHTML = obj.name + ", " + 
  obj.age();

what does json.parse do

The JSON.parse() method parses a JSON string, constructing the JavaScript value or object described by the string. An optional reviver function can be provided to perform a transformation on the resulting object before it is returned.