method to convert to js json code example
Example 1: change js to json
var obj = {name: "Martin", age: 30, country: "United States"};
// Converting JS object to JSON string
var json = JSON.stringify(obj);
console.log(json);
// Prints: {"name":"Martin","age":30,"country":"United States"}
"https://www.tutorialrepublic.com/faq/how-to-convert-js-object-to-json-string.php"
Example 2: js string to json
var obj = JSON.parse("{no:'u',my:'sql'}");//returnes {no:'u',my:'sql'}