1.1 Source JS File. The account.json file is created in the example source code. Here to compare we have to first stringify the object and then using equality operators it is possible to compare the objects. If you have JSON data as part of a string, the best way to parse it is by using the JSON.parse method that's part of the JavaScript standard since ECMAScript 5, and it's provided by V8, the JavaScript engine that powers Node.js. Comparing Objects using JSON in PowerShell for Pester Tests A non-numeric string converts to NaN which is always false. To compare two objects you could use deep flag. Definition and Usage. Node.js Parse JSON - TutorialKart How to Read and Write JSON with NodeJS Objects are reference types so we can't just use === or == to compare 2 objects. The task is to check if a user with a given name exists in the list of users. Hi I have lot of json object in fouser table .For particular object say id is ObjectId("533a91b2263e03670b000009") taking means no problem working.I mean see the below map reduce concept in if condition[docid == ObjectId("533a91b2263e03670b000009")] hot coded.So working. Introduction to JSON. Some of the Node.js Global Objects are listed below: Buffer Class: The Buffer class is a globally accessible class. Created by Zack Grossbart. There are multiple ways of comparison done using the JSON compare tool. (Un)surprisingly node.js was the fastest with this task (21 seconds). First, add the fs module to your project: const fs = require ('fs'); The .splice () inserts an object at a specified index in an array. You can also beautify JSON or formate JSON. There is a nice module named 'stream-json' that does exactly what I wanted. It's not clear what you would like to compare the objects to, but here is some code to get you started. Shorthand Keys But, if you can use Lodash, isEqual () is the best approach for checking whether two objects are deeply equal. We provide you to Directly copy JSON Data and paste when you want. Nodejs; Laravel; Full Forms; node.js; arrays; typescript; multidimensional-array; reactjs; redux; firebase; firebase-realtime-database; bootstrap-4; datatables; asp.net; viewport; calendar; . const comparePlayers = (players) => { // iterates over each object players.forEach(player => { // destructure object const { x, z, account } = player; // your compare players logic }); }; comparePlayers(jsonData.players); or . We can use the .push () function to add a JSON object to the end of the array. The shallow strict comparison approach is good for cases where you aren't worried about nested objects, and JSON.stringify () can help provide a rough deep equality check in cases where you can't use Lodash.