How can I parse records on demand with Node.js?
As far as I understand, you just want to parse the comma-separated line of values into an array? If so, try this one:
Parsing a single 'line' (which can also have embedded newlines):
var csv = require('csv'); // node-csvcsv() .from.string(SINGLE_LINE_OF_CSV) .to.array(function(record) { console.log('R', record); });I'm not sure what you mean by 'a specific number of records from a CSV file', or what the issue is exactly. Once you've read the amount you need, just send the response back to the client and you're done.
EDIT: if you want to implement paging, you can use node-csv too:
var csv = require('csv');var skip = 100;var limit = 10;csv() .from.path('file.csv') .on('record', function(row, index) { if (index >= skip && index < (skip + limit)) console.log('R', index); });