How to compare two json arrays using node.js

Question

json1 = 
[{
        "name": "apple"
},
{
        "name": "mango"
},
{
        "name": "orange"
}]

json2 = [{
        "name": "apple"
},
{
        "name": "mango"
}]

I need to compare the two jsons and find out the mismatch between two json-arrays. The expected result is obviously orange. Would you please anyone help me getting this done.

What you posted are two JavaScript arrays, not JSON. JSON is a textual, language-independent data format, just like XML. — Felix Kling
– Felix Kling, Commented Apr 9, 2015 at 17:55
You can use underscore.js for comparing. For more, stackoverflow.com/questions/24336485/… — Naing Lin Aung
– Naing Lin Aung, Commented Apr 10, 2015 at 3:04

Randy Hunt · Accepted Answer · 2015-04-09 17:44:56Z

1

Grab json-diff from npm - https://www.npmjs.com/package/json-diff

Or, just have a look at the source code and do whatever he did. - https://github.com/andreyvit/json-diff

answered Apr 9, 2015 at 17:44

Randy Hunt

4253 silver badges10 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Felix Kling Over a year ago

The OP seems to have JavaScript arrays, not JSON.

Dylan Watt · Accepted Answer · 2015-04-09 17:48:57Z

1

There are some packages out there on npm that appear to do this (https://github.com/NV/objectDiff.js).

If efficiency is not a concern, you can just do a scan, where you loop across json1, and for every element see if it exists in json2, and then vice versa. In this case, since you're only looking for these name KVPs, you could also just normalize it into ['apple', 'mango', 'orange'] and ['apple', 'mango'] and use indexOf().

answered Apr 9, 2015 at 17:48

Dylan Watt

3,38715 silver badges17 bronze badges

Collectives™ on Stack Overflow

How to compare two json arrays using node.js

2 Answers 2

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related