js csv code example

Example 1: create csv file javascript

$("#download_1").click(function() {
var json_pre = '[{"Id":1,"UserName":"Sam Smith"},{"Id":2,"UserName":"Fred Frankly"},{"Id":1,"UserName":"Zachary Zupers"}]';
var json = $.parseJSON(json_pre);

var csv = JSON2CSV(json);
var downloadLink = document.createElement("a");
var blob = new Blob(["\ufeff", csv]);
var url = URL.createObjectURL(blob);
downloadLink.href = url;
downloadLink.download = "data.csv";

document.body.appendChild(downloadLink);
downloadLink.click();
document.body.removeChild(downloadLink);
});

Example 2: parse csv javascript

//Suppose you have a CSV file data.csv which contains the data:

//NAME,AGE
//Daffy Duck,24
//Bugs Bunny,22

const csv = require('csv-parser')
const fs = require('fs')
const results = []; 

fs.createReadStream('data.csv')
  .pipe(csv())
  .on('data', (data) => results.push(data))
  .on('end', () => console.log(results));

 // [{ NAME: 'Daffy Duck', AGE: '24' },
//   { NAME: 'Bugs Bunny', AGE: '22' } ]