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npm install jsonpath-rep


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

With replacement

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


Given the following JSON, taken from :

{ "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 $[*].author the authors of all books in the store
//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] $[2] the third book
//book[last()] $[(@.length-1)] the last book in order.
//book[position()<3] $[0,1] the first two books
//book[isbn] $[+(@.isbn)] filter all books with isbn number
//book[price<10] $[+(@.price<10)] filter all books cheapier than 10
//* $..* all Elements in XML document. All members of JSON structure.

See for license.