Package detail

Overview

Sung-Merge-JSON merges two JSONs deeply inside the object

Specs

• It merges two JSONs in multiple depth levels of the Object
• When both JSON has the value on a samy key, it takes the value from the first JSON
• Array will be treated as a value. Array will be overrided with the value in the first JSON Object
• You can use it when you need to add up the default values into the user input data
• Second values will be used only when the first values are undefined or null

Install

npm install sung-merge-json

Test

Open console

node -c

Import module

var merge = require('sung-merge-json')

Define two JSONs to merge

var user_input_data = {
    "name": "Sung",
    "city": null,
    "phone": "917-222-3333",
    "aboutme": {
        "favorite_food": "korean",
        "friends": {
            "second": "hong",
            "lovers": ["ping", "ching"]
        }
    }
}
var default_values = {
    "name": "User Name",
    "city": "NYC",
    "email": "you@aol.com",
    "aboutme": {
        "favorite_food": "everything",
        "favorite_music": "pop",
        "friends": {
            "best": "sung",
            "others": ["song", "pong"],
            "lovers": ["mi", "mom"]
        }
    }
}

Execute the module

var result = merge(user_input_data, default_values)

Check the result

console.log(result)
{ name: 'Sung',
  city: 'NYC',
  phone: '917-222-3333',
  aboutme:
   { favorite_food: 'korean',
     friends:
      { second: 'hong',
        lovers: [Object],
        best: 'sung',
        others: [Object] },
     favorite_music: 'pop' },
  email: 'sol1000@hotmail.com' }

Every Object will be merged until the end of the JSON tree

console.log(result.aboutme)
{ favorite_food: 'korean',
  friends:
   { second: 'hong',
     lovers: [ 'ping', 'ching' ],
     best: 'sung',
     others: [ 'song', 'pong' ] },
  favorite_music: 'pop' }

Array will be overrided with the value in the first JSON Object

console.log(result.aboutme.friends.lovers)
[ 'ping', 'ching' ]