Question
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[Safely turning a JSON string into an object](/questions/45015/safely-turning- a-json-string-into-an-object) (28 answers)
Closed 8 years ago.
I want to parse a JSON string in JavaScript. The response is something like
var response = '{"result":true,"count":1}';
How can I get the values result and count from this?
Answer
The standard way to parse JSON in JavaScript is
[JSON.parse()](http://msdn.microsoft.com/en-
us/library/cc836466(v=vs.85).aspx)
The [JSON](https://developer.mozilla.org/en-
US/docs/Web/JavaScript/Reference/Global_Objects/JSON) API was introduced with
ES5 (2011) and has
since been implemented in >99% of browsers by market share, and Node.js. Its
usage is simple:
const json = '{ "fruit": "pineapple", "fingers": 10 }';
const obj = JSON.parse(json);
console.log(obj.fruit, obj.fingers);
The only time you won't be able to use JSON.parse() is if you are
programming for an ancient browser, such as IE 7 (2006), IE 6 (2001), Firefox
3 (2008), Safari 3.x (2009), etc. Alternatively, you may be in an esoteric
JavaScript environment that doesn't include the standard APIs. In these cases,
use [json2.js](https://github.com/douglascrockford/JSON-
js/blob/master/json2.js), the reference implementation of JSON written by
Douglas Crockford, the
inventor of JSON. That library will provide an implementation of
JSON.parse().
When processing extremely large JSON files, JSON.parse() may choke because
of its synchronous nature and design. To resolve this, the JSON website
recommends third-party libraries such as Oboe.js and
clarinet, which provide streaming JSON
parsing.
jQuery once had a $.parseJSON()
function, but it was deprecated with jQuery 3.0. In any case, for a long time,
it was nothing more than a wrapper around JSON.parse().
