Использование JSON в JavaScript

Можно довольно легко создать новую JavaScript-переменную и затем непосредственно присвоить ей строку с данными, отформатированными в JSON. Вот так:

var people =
  { "programmers": [
    { "firstName": "Brett", "lastName":"McLaughlin", "email": "brett@newInstance.com" },
    { "firstName": "Jason", "lastName":"Hunter", "email": "jason@servlets.com" },
    { "firstName": "Elliotte", "lastName":"Harold", "email": "elharo@macfaq.com" }
   ],
  "authors": [
    { "firstName": "Isaac", "lastName": "Asimov", "genre": "science fiction" },
    { "firstName": "Tad", "lastName": "Williams", "genre": "fantasy" },
    { "firstName": "Frank", "lastName": "Peretti", "genre": "christian fiction" }
   ],
  "musicians": [
    { "firstName": "Eric", "lastName": "Clapton", "instrument": "guitar" },
    { "firstName": "Sergei", "lastName": "Rachmaninoff", "instrument": "piano" }
   ]
  }