Path-explorer

Library (for NodeJS) used to get and set values in a Javascript object using path.

Features

• Get value from any path
• Set and override value for any path

Installation

To install the library, just use npm: npm install path-explorer

Usage

The library will send back an object with two methods (get & set):

var pathExplorer = require('path-explorer');
var value = pathExplorer.get(object, 'w.x.array[1][2][3].z');
var value = pathExplorer.set({
  target: object,
  path: 'a.b.c[1][2][3].d',
  value: 'Example',
}).then(function onSuccess(result) {
  // Result is your modified target but the source target will be modified as well
}).catch(function onError(err) {}); function onSet(err, result) {
});

Get

Synchronised. Relatively straightforward, it will send any value found following the path. If the path lead to a null or undefined object in the middle or at the end of the path, it will send back null (or undefined).

For getting values in array, you can use the standard array accessing notation of JS in the path (array[index1][index2][index3]). The dimensions are not limited. An index should always be present otherwise an error will be thrown.

Set

Asynchronized (Using Promises). Using the same path notation as for the getter, you can set a value in the object. Any object not existing in the path will be created, as well as arrays. Again, multi-dimension arrays are supported.

Concerning the array, if an array is specified with an empty index ([]) the setter will create a new element at the end of the array. If the index is larger than the array length, the element will still be created at the right index in the array, creating empty elements if necessary.