Combine or merge JSON on node.js without jQuery

Question

I have multiple JSON like those

var object1 = {name: \"John\"};
var object2 = {location: \"San Jose\"};

They are not nesting o

Answer 1

You can do it inline, without changing any variables like this:

let obj1 = { name: 'John' };
let obj2 = { surname: 'Smith' };
let obj = Object.assign({}, obj1, obj2); // { name: 'John', surname: 'Smith' }

Answer 2

Use spread operator. It is supported in Node since version 8.6

const object1 = {name: "John"};
const object2 = {location: "San Jose"};

const obj = {...object1, ...object2}

console.log(obj)
//   {
//     "name": "John",
//     "location": "San Jose"
//   }

Answer 3

The below code will help you to merge two JSON object which has nested objects.

function mergeJSON(source1,source2){
    /*
     * Properties from the Souce1 object will be copied to Source2 Object.
     * Note: This method will return a new merged object, Source1 and Source2 original values will not be replaced.
     * */
    var mergedJSON = Object.create(source2);// Copying Source2 to a new Object

    for (var attrname in source1) {
        if(mergedJSON.hasOwnProperty(attrname)) {
          if ( source1[attrname]!=null && source1[attrname].constructor==Object ) {
              /*
               * Recursive call if the property is an object,
               * Iterate the object and set all properties of the inner object.
              */
              mergedJSON[attrname] = zrd3.utils.mergeJSON(source1[attrname], mergedJSON[attrname]);
          } 

        } else {//else copy the property from source1
            mergedJSON[attrname] = source1[attrname];

        }
      }

      return mergedJSON;
}

Answer 4

You can use Lodash

const _ = require('lodash');

let firstObject = {'email' : 'email@email.com};
let secondObject = { 'name' : { 'first':message.firstName } };
_.merge(firstObject, secondObject)

Answer 5

There is an easy way of doing it in Node.js

var object1 = {name: "John"};
var object2 = {location: "San Jose"};

To combine/extend this we can use ... operator in ECMA6

var object1 = {name: "John"};
var object2 = {location: "San Jose"};

var result = {
  ...object1,
  ...object2
}

console.log(result)

Answer 6

Underscore's extend is the easiest and quickest way to achieve this, like James commented.

Here's an example using underscore:

var _ = require('underscore'), // npm install underscore to install
  object1 = {name: "John"},
  object2 = {location: "San Jose"};

var target = _.extend(object1, object2);

object 1 will get the properties of object2 and be returned and assigned to target. You could do it like this as well, depending on whether you mind object1 being modified:

var target = {};
_.extend(target, object1, object2);