Hello everyone , I have an external POS system built on JavaScript that records transactions. I want to create a record of that transaction in NetSuite after clicking the submit button on that external system. Does anyone knows any JavaScript library or API through which we can connect to NetSuite? Thanks in Advance.

Maybe REST API is easiest way from javascript? It is technically beta but fairly stable - you can have a look at the list of records here and see if it covers what you need to integrate: https://system.netsuite.com/help/helpcenter/en_US/APIs/REST_API_Browser/record/v1/2023.1/index.html#tag-account