Node.js script to filter json data based on some attribute

nyc-dog-dataset-filterby-birthyear.js

/**
Must be run in node.js
you can run this script by opening up your terminal:

```
$ node nyc-dog-dataset-filterby-birthyear.js
```
**/

const fs = require('fs');

// read in your data - this assumes you have the json data for the dog licensing dataset in the same folder
const data = require('./NYC_Dog_Licensing_Dataset.json');

// let data2016 = data.filter(item => Number(item['Extract Year']) === 2016 );
let birth2016 = data.filter(item => Number(item['AnimalBirthMonth']) === 2016 );

console.log('all dogs', data.length);
console.log('dogs born in 2016:', birth2016.length);

// write out your data to a file
fs.writeFileSync('NYC_Dog_Licensing_Dataset__birth-2016.json', JSON.stringify(birth2016))