Read fields from JSON text.

Parsing Fields

json_parse_fields.js
const sourceName = "Ada";
const text = "{\"name\":\"" + sourceName + "\",\"level\":3}";
const name = JSON.parse(text).name;
const level = JSON.parse(text).level;

console.log("name=" + name);
console.log("level=" + level);
json-parse-fields `JSON.parse` turns JSON text back into JavaScript data. After parsing, code can read fields by name.