Install

npm install jsonpath-rep

Evaluate

var jsonpath = require('jsonpath-rep');
jsonpath.eval(obj, path, args);

With replacement

  jsonpath.eval(obj, path, args, replaceval);

Examples

Given the following JSON, taken from http://goessner.net/articles/JsonPath/ :

{ "store": {
    "book": [ 
      { "category": "reference",
        "author": "Nigel Rees",
        "title": "Sayings of the Century",
        "price": 8.95
      },
      { "category": "fiction",
        "author": "Evelyn Waugh",
        "title": "Sword of Honour",
        "price": 12.99
      },
      { "category": "fiction",
        "author": "Herman Melville",
        "title": "Moby Dick",
        "isbn": "0-553-21311-3",
        "price": 8.99
      },
      { "category": "fiction",
        "author": "J. R. R. Tolkien",
        "title": "The Lord of the Rings",
        "isbn": "0-395-19395-8",
        "price": 22.99
      }
    ],
    "bicycle": {
      "color": "red",
      "price": 19.95
    }
  }
}

XPath | JSONPath | Result ------------------- | ---------------------- | ------------------------------------- /store/book/author | $.store.book[].author | the authors of all books in the store //author | $..author | all authors /store/ | $.store.* | all things in store, which are some books and a red bicycle. /store//price | $.store..price | the price of everything in the store. //book[3] | $..book[2] | the third book //book[last()] | $..book[(@.length-1)] | the last book in order. | $..book[-1:] | //book[position()<3]| $..book[0,1] | the first two books | $..book[:2] | //book[isbn] | $..book[+(@.isbn)] | filter all books with isbn number //book[price<10] | $..book[+(@.price<10)] | filter all books cheapier than 10 //* | $..* |all Elements in XML document. All members of JSON structure.

See http://www.opensource.org/licenses/mit-license.php for license.